Find assets using the search field. As you start to type in the search field, all items that have a name or a tag that contains the search string, are presented. The number of results in fields and master items are shown in each of the tabs in Assets.
In the advanced edit mode, when a matching string is found in a tag, it is indicated by a tag icon in the search result. Clicking the item in the list of results, brings up a preview of it.