diff --git a/README.md b/README.md
index 7e0eea7..52d6680 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,7 @@ The following aggregations are currently supported:
 | `"string_stats"`        | `StringStats()`       |
 | `"top_hits"`            | `TopHits()`           |
 | `"terms"`               | `TermsAgg()`          |
+| `"date_histogram"`      | `DateHistogramAgg()`  |
 
 ### Supported Top Level Options
 
diff --git a/aggregations_test.go b/aggregations_test.go
index 949123d..4d0238f 100644
--- a/aggregations_test.go
+++ b/aggregations_test.go
@@ -62,7 +62,14 @@ func TestAggregations(t *testing.T) {
 			"a complex, multi-aggregation, nested",
 			Aggregate(
 				NestedAgg("categories", "categories").
-					Aggs(TermsAgg("type", "outdoors")),
+					Aggs(
+						TermsAgg("type", "outdoors").Aggs(
+							DateHistogramAgg("time", "timestamp").
+								Fixedinterval("3m").MinDocCount(0).Aggs(
+								Sum("sumPeople", "people"),
+							),
+						),
+					),
 				FilterAgg("filtered",
 					Term("type", "t-shirt")),
 			),
@@ -77,6 +84,22 @@ func TestAggregations(t *testing.T) {
 								"terms": map[string]interface{}{
 									"field": "outdoors",
 								},
+								"aggs": map[string]interface{}{
+									"time": map[string]interface{}{
+										"date_histogram": map[string]interface{}{
+											"field":          "timestamp",
+											"fixed_interval": "3m",
+											"min_doc_count":  0,
+										},
+										"aggs": map[string]interface{}{
+											"sumPeople": map[string]interface{}{
+												"sum": map[string]interface{}{
+													"field": "people",
+												},
+											},
+										},
+									},
+								},
 							},
 						},
 					},
diff --git a/aggs_bucket.go b/aggs_bucket.go
index 1a45a14..f4bcfbe 100644
--- a/aggs_bucket.go
+++ b/aggs_bucket.go
@@ -110,3 +110,144 @@ func (agg *TermsAggregation) Map() map[string]interface{} {
 
 	return outerMap
 }
+
+//----------------------------------------------------------------------------//
+
+// DateHistogramAggregation represents an aggregation of type "date_histogram", as described in
+// https://www.elastic.co/guide/en/elasticsearch/reference/current/
+//      search-aggregations-bucket-datehistogram-aggregation.html
+type DateHistogramAggregation struct {
+	name             string
+	field            string
+	calendarInterval string
+	fixedInterval    string
+	format           string
+	offset           string
+	keyed            *bool
+	minDocCount      *uint64
+	missing          string
+	order            map[string]string
+
+	aggs []Aggregation
+}
+
+// DateHistogramAgg creates a new aggregation of type "date_histogram".
+func DateHistogramAgg(name, field string) *DateHistogramAggregation {
+	return &DateHistogramAggregation{
+		name:  name,
+		field: field,
+	}
+}
+
+// Name returns the name of the aggregation.
+func (agg *DateHistogramAggregation) Name() string {
+	return agg.name
+}
+
+// Aggs sets sub-aggregations for the aggregation.
+func (agg *DateHistogramAggregation) Aggs(aggs ...Aggregation) *DateHistogramAggregation {
+	agg.aggs = aggs
+	return agg
+}
+
+// CalendarInterval sets calendarInterval
+func (agg *DateHistogramAggregation) CalendarInterval(interval string) *DateHistogramAggregation {
+	agg.calendarInterval = interval
+	return agg
+}
+
+// Fixedinterval sets fixedInterval
+func (agg *DateHistogramAggregation) Fixedinterval(interval string) *DateHistogramAggregation {
+	agg.fixedInterval = interval
+	return agg
+}
+
+// Format sets format
+func (agg *DateHistogramAggregation) Format(format string) *DateHistogramAggregation {
+	agg.format = format
+	return agg
+}
+
+// Offset sets offset
+func (agg *DateHistogramAggregation) Offset(offset string) *DateHistogramAggregation {
+	agg.offset = offset
+	return agg
+}
+
+// Order sets the sort for terms agg
+func (agg *DateHistogramAggregation) Order(order map[string]string) *DateHistogramAggregation {
+	agg.order = order
+	return agg
+}
+
+// Keyed sets keyed is true or false
+func (agg *DateHistogramAggregation) Keyed(keyed bool) *DateHistogramAggregation {
+	agg.keyed = &keyed
+	return agg
+}
+
+// Missing sets missing value
+func (agg *DateHistogramAggregation) Missing(missing string) *DateHistogramAggregation {
+	agg.missing = missing
+	return agg
+}
+
+// MinDocCount sets min doc count
+func (agg *DateHistogramAggregation) MinDocCount(minDocCount uint64) *DateHistogramAggregation {
+	agg.minDocCount = &minDocCount
+	return agg
+}
+
+// Map returns a map representation of the aggregation, thus implementing the
+// Mappable interface.
+func (agg *DateHistogramAggregation) Map() map[string]interface{} {
+	innerMap := map[string]interface{}{
+		"field": agg.field,
+	}
+
+	if agg.calendarInterval != "" {
+		innerMap["calendar_interval"] = agg.calendarInterval
+	}
+
+	if agg.fixedInterval != "" {
+		innerMap["fixed_interval"] = agg.fixedInterval
+	}
+
+	if agg.format != "" {
+		innerMap["format"] = agg.format
+	}
+
+	if agg.offset != "" {
+		innerMap["offset"] = agg.offset
+	}
+
+	if agg.missing != "" {
+		innerMap["missing"] = agg.missing
+	}
+
+	if agg.minDocCount != nil {
+		innerMap["min_doc_count"] = agg.minDocCount
+	}
+
+	if agg.keyed != nil {
+		innerMap["keyed"] = *agg.keyed
+	}
+
+	if agg.order != nil {
+		innerMap["order"] = agg.order
+	}
+
+	outerMap := map[string]interface{}{
+		"date_histogram": innerMap,
+	}
+
+	if len(agg.aggs) > 0 {
+		subAggs := make(map[string]map[string]interface{})
+		for _, sub := range agg.aggs {
+			subAggs[sub.Name()] = sub.Map()
+		}
+		outerMap["aggs"] = subAggs
+	}
+
+	return outerMap
+}
diff --git a/query_combined_fields.go b/query_combined_fields.go
new file mode 100644
index 0000000..87b4e2d
--- /dev/null
+++ b/query_combined_fields.go
@@ -0,0 +1,86 @@
+package esquery
+
+import "github.com/fatih/structs"
+
+type CombinedFieldsQuery struct {
+	params combinedFieldsParams
+}
+
+// Map returns a map representation of the query; implementing the
+// Mappable interface.
+func (q *CombinedFieldsQuery) Map() map[string]interface{} {
+	return map[string]interface{}{
+		"combined_fields": structs.Map(q.params),
+	}
+}
+
+type combinedFieldsParams struct {
+	Qry          interface{}    `structs:"query"`
+	Fields       []string       `structs:"fields"`
+	Boost        float32        `structs:"boost,omitempty"`
+	AutoGenerate *bool          `structs:"auto_generate_synonyms_phrase_query,omitempty"`
+	Op           MatchOperator  `structs:"operator,string,omitempty"`
+	MinMatch     string         `structs:"minimum_should_match,omitempty"`
+	ZeroTerms    ZeroTerms      `structs:"zero_terms_query,string,omitempty"`
+}
+
+// CombinedFields creates a new query of type "combined_fields"
+func CombinedFields(simpleQuery interface{}) *CombinedFieldsQuery {
+	return newCombinedFields(simpleQuery)
+}
+
+func newCombinedFields(simpleQuery interface{}) *CombinedFieldsQuery {
+	return &CombinedFieldsQuery{
+		params: combinedFieldsParams{
+			Qry: simpleQuery,
+		},
+	}
+}
+
+// Query sets the data to find in the query's field (it is the "query" component
+// of the query).
+func (q *CombinedFieldsQuery) Query(data interface{}) *CombinedFieldsQuery {
+	q.params.Qry = data
+	return q
+}
+
+// Fields sets the fields used in the query
+func (q *CombinedFieldsQuery) Fields(a ...string) *CombinedFieldsQuery {
+	q.params.Fields = append(q.params.Fields, a...)
+	return q
+}
+
+// AutoGenerateSynonymsPhraseQuery sets the "auto_generate_synonyms_phrase_query"
+// boolean.
+func (q *CombinedFieldsQuery) AutoGenerateSynonymsPhraseQuery(b bool) *CombinedFieldsQuery {
+	q.params.AutoGenerate = &b
+	return q
+}
+
+// Boost
+func (q *CombinedFieldsQuery) Boost(l float32) *CombinedFieldsQuery {
+	q.params.Boost = l
+	return q
+}
+
+// Operator sets the boolean logic used to interpret text in the query value.
+func (q *CombinedFieldsQuery) Operator(op MatchOperator) *CombinedFieldsQuery {
+	q.params.Op = op
+	return q
+}
+
+// MinimumShouldMatch sets the minimum number of clauses that must match for a
+// document to be returned.
+func (q *CombinedFieldsQuery) MinimumShouldMatch(s string) *CombinedFieldsQuery {
+	q.params.MinMatch = s
+	return q
+}
+
+// ZeroTermsQuery sets the "zero_terms_query" option to use. This indicates
+// whether no documents are returned if the analyzer removes all tokens, such as
+// when using a stop filter.
+func (q *CombinedFieldsQuery) ZeroTermsQuery(s ZeroTerms) *CombinedFieldsQuery {
+	q.params.ZeroTerms = s
+	return q
+}
+
diff --git a/query_combined_fields_test.go b/query_combined_fields_test.go
new file mode 100644
index 0000000..d9183c0
--- /dev/null
+++ b/query_combined_fields_test.go
@@ -0,0 +1,43 @@
+package esquery
+
+import (
+	"testing"
+)
+
+func TestCombinedFields(t *testing.T) {
+	runMapTests(t, []mapTest{
+		{
+			"simple combined_fields",
+			CombinedFields("value1").Fields("title"),
+			map[string]interface{}{
+				"combined_fields": map[string]interface{}{
+					"fields": []string{"title"},
+					"query":  "value1",
+				},
+			},
+		},
+		{
+			"combined_fields all params",
+			CombinedFields("original").
+				Query("test").
+				Fields("title", "body").
+				AutoGenerateSynonymsPhraseQuery(true).
+				Boost(6.4).
+				Operator(OperatorAnd).
+				MinimumShouldMatch("3<90%").
+				ZeroTermsQuery(ZeroTermsAll),
+			map[string]interface{}{
+				"combined_fields": map[string]interface{}{
+					"auto_generate_synonyms_phrase_query": true,
+					"boost":                               6.4,
+					"minimum_should_match":                "3<90%",
+					"operator":                            "AND",
+					"zero_terms_query":                    "all",
+					"query":                               "test",
+					"fields":                              []string{"title", "body"},
+				},
+			},
+		},
+	})
+}
+
diff --git a/query_match.go b/query_match.go
index f34779b..b0a9608 100644
--- a/query_match.go
+++ b/query_match.go
@@ -71,6 +71,7 @@ type matchParams struct {
 	MinMatch     string        `structs:"minimum_should_match,omitempty"`
 	ZeroTerms    ZeroTerms     `structs:"zero_terms_query,string,omitempty"`
 	Slp          uint16        `structs:"slop,omitempty"` // only relevant for match_phrase query
+	Boost        float32       `structs:"boost,omitempty"`
 }
 
 // Match creates a new query of type "match" with the provided field name.
@@ -202,6 +203,12 @@ func (q *MatchQuery) ZeroTermsQuery(s ZeroTerms) *MatchQuery {
 	return q
 }
 
+// Boost sets the boost value of the query.
+func (a *MatchQuery) Boost(b float32) *MatchQuery {
+	a.params.Boost = b
+	return a
+}
+
 // MatchOperator is an enumeration type representing supported values for a
 // match query's "operator" parameter.
 type MatchOperator uint8
diff --git a/query_match_test.go b/query_match_test.go
index 238c68d..a7c957c 100644
--- a/query_match_test.go
+++ b/query_match_test.go
@@ -17,6 +17,18 @@ func TestMatch(t *testing.T) {
 				},
 			},
 		},
+		{
+			"simple match",
+			Match("title", "sample text").Boost(50),
+			map[string]interface{}{
+				"match": map[string]interface{}{
+					"title": map[string]interface{}{
+						"query": "sample text",
+						"boost": 50,
+					},
+				},
+			},
+		},
 		{
 			"match with more params",
 			Match("issue_number").Query(16).Transpositions(false).MaxExpansions(32).Operator(OperatorAnd),
diff --git a/query_multi_match.go b/query_multi_match.go
index 0d5f2a2..3dc6caf 100644
--- a/query_multi_match.go
+++ b/query_multi_match.go
@@ -18,7 +18,7 @@ func (q *MultiMatchQuery) Map() map[string]interface{} {
 
 type multiMatchParams struct {
 	Qry          interface{}    `structs:"query"`
-	Fields       []string       `structs:"fields"`
+	Fields       []string       `structs:"fields,omitempty"`
 	Type         MultiMatchType `structs:"type,string,omitempty"`
 	TieBrk       float32        `structs:"tie_breaker,omitempty"`
 	Boost        float32        `structs:"boost,omitempty"`
diff --git a/query_term_level.go b/query_term_level.go
index 2604d3e..d2fb7cc 100644
--- a/query_term_level.go
+++ b/query_term_level.go
@@ -518,3 +518,45 @@ func (q TermsSetQuery) Map() map[string]interface{} {
 		},
 	}
 }
+
+// geoFilterParams represents a query of type "geo_distance", as described in:
+// https://www.elastic.co/guide/en/elasticsearch/reference/7.17/query-dsl-geo-distance-query.html
+type GeoFilter struct {
+	params geoFilterParams
+	filed  string
+}
+
+func GeoFilterFunc(distance string, MiddleCentroid []float64, filed string) *GeoFilter {
+	return &GeoFilter{
+		params: geoFilterParams{
+			Distance:       distance,
+			MiddleCentroid: MiddleCentroid,
+		},
+		filed: filed,
+	}
+}
+
+type geoFilterParams struct {
+	Distance       string    `structs:"distance,omitempty"`
+	MiddleCentroid []float64 `structs:"location,omitempty"`
+}
+
+func (g *GeoFilter) Distance(distance string) *GeoFilter {
+	g.params.Distance = distance
+	return g
+}
+func (g *GeoFilter) MiddleCentroid(middleCentroid []float64) *GeoFilter {
+	g.params.MiddleCentroid = middleCentroid
+	return g
+}
+
+func (g *GeoFilter) Map() map[string]interface{} {
+	m := structs.Map(g.params)
+	m[g.filed] = m["location"]
+	delete(m, "location")
+	response := map[string]interface{}{
+		"geo_distance": m}
+
+	return response
+
+}