[skip-ci][Maps] Update search docs (#45307)

* [skip ci][Maps] Update search document section with new features

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

* Update docs/maps/search.asciidoc

Co-Authored-By: gchaps <33642766+gchaps@users.noreply.github.com>

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* remove trailing .html from link

docs/maps/search.asciidoc

@@ -2,8 +2,9 @@
 [[maps-search]]
 == Searching your data
 
-**Elastic Maps** embeds the query bar for real-time ad hoc search.
+**Elastic Maps** embeds the search bar for real-time search.
 Only layers requesting data from {es} are filtered when you submit a search request.
+Layers narrowed by the search context contain the filter icon image:maps/images/filter_icon.png[] to the right of layer name in the legend.
 
 You can create a layer that requests data from {es} from the following:
 
@@ -13,13 +14,51 @@ You can create a layer that requests data from {es} from the following:
 
 ** Grid aggregation source
 
-** <<terms-join>>
+** <<terms-join>>. The search context is applied to both the terms join and the vector source when the vector source is provided by Elasticsearch documents.
 
 * <<heatmap-layer>> with Grid aggregation source
 
 [role="screenshot"]
 image::maps/images/global_search_bar.png[]
 
+[role="xpack"]
+[[maps-create-filter-from-map]]
+=== Creating filters from your map
+
+You can create two types of filters by interacting with your map:
+
+* <<maps-spatial-filters, Spatial filters>>
+* <<maps-phrase-filter, Phrase filters>>
+
+[float]
+[[maps-spatial-filters]]
+==== Spatial filters
+
+A spatial filter narrow searchs results to documents that either intersect with, are within, or do not intersect with the specified geometry.
+
+You can create spatial filters in two ways:
+
+* Click the tool icon image:maps/images/tools_icon.png[], and then draw a polygon or bounding box on the map to define the spatial filter.
+* Click *Filter by geometry* in a tooltip, and then use the feature's geometry for the spatial filter.
++
+[role="screenshot"]
+image::maps/images/create_spatial_filter.png[]
+
+Spatial filters have the following properties:
+
+* *Geometry label* enables you to provide a meaningful name for your spatial filter.
+* *Spatial field* specifies the geo_point or geo_shape field used to determine if a document matches the spatial relation with the specified geometry.
+* *Spatial relation* determines the {ref}/query-dsl-geo-shape-query.html#_spatial_relations[spatial relation operator] to use at search time. Only available when *Spatial field* is set to geo_shape.
+
+[float]
+[[maps-phrase-filter]]
+==== Phrase filters
+
+A phrase filter narrows search results to documents that contain the specified text.
+You can create a phrase filter by clicking the plus icon image:maps/images/gs_plus_icon.png[] in a feature tooltip.
+
+[role="screenshot"]
+image::maps/images/create_phrase_filter.png[]
 
 [role="xpack"]
 [[maps-layer-based-filtering]]
@@ -43,6 +82,18 @@ This can also occur with a single layer with an {es} source and a <<terms-join>>
 
 Searching across multiple indices might sometimes result in empty layers.
 The most common cause for empty layers are searches for a field that exists in one index, but does not exist in other indices.
+
+[float]
+[[maps-disable-search-for-layer]]
+==== Disable search for layer
+
+To prevent the global search bar from applying search context to a layer, clear the *Apply global filter to layer* checkbox in Layer settings.
+Disabling the search context applies to the layer source and all <<terms-join, term joins>> configured for the layer.
+
+[float]
+[[maps-add-index-search]]
+==== Use _index in your search
+
 Add {ref}/mapping-index-field.html[_index] to your search to include documents from indices that do not contain a search field.
 
 For example, suppose you have a vector layer showing the `kibana_sample_data_logs` documents