Any record type that uses tags will have a Tags field for filtering in the record list page. This field is made up of a drop-down menu and a Search... box.
Selecting the Search... box will open a drop-down menu where you can add multiple tags to search by. The following search options are available:
Any – This will filter the list to records that contain at least one of the specified tags.
All – This will filter the list to records that contain every specified tag.
None – This will filter the list to records that do not have any of the specified tags.
When you run the search by pressing Enter or selecting the magnifying glass icon, the list will be updated to reflect your search options.
For more information, take a look at the full help page for Using Tags.
Keywords: Tagging, Labelling, Custom Labels, Record Tags, Search Filters