Keyword snippets can only be applied when creating or editing a stream under Advanced Search Options. They are not supported in basic keyword search bars, quick dashboard filters, or report filter menus. Applying a keyword snippet means inserting it into your search query under Advanced Search Options.
Note:
You can insert a keyword snippet created from a Keyword/s search into a Boolean Query and vice versa.
You can insert as many keyword snippets in a search query as you'd like.
Inserting a keyword snippet into a keyword search
Select a keyword entry field.
Select the lightning bolt icon that appears inside the field.
Select Keyword Snippets from the menu.
The Insert/Manage Keyword Snippet window opens. From the dropdown list, select a keyword snippet to preview its associated keywords or Boolean query before inserting it into your search query.
Select the required snippet from the Select Keyword Snippet dropdown.
If the snippet was built using keywords, review the description and keywords.
If the snippet was built using Boolean, review the query.
5. Select Insert. Once inserted, the keyword snippet appears as a purple pill in the field, whether it was created using keywords or a Boolean query.
This keyword snippet is included when the mention stream is created or edited.
Inserting a keyword snippet into a Boolean query
Select Keyword Snippet, located above the Query field, prior to Boolean Creator.
The Insert/Manage Keyword Snippet window opens. 
Select the required snippet from the Select Keyword Snippet dropdown.
If the snippet was built using keywords, review the description and keywords and select Insert.
If the snippet was built using Boolean, review the query and select Insert.
The keyword snippet placeholder tag is inserted into the Query field at the current cursor position.
This keyword snippet is included when the mention stream is created or edited.
To learn how to create keyword snippets see Creating keyword snippets.