With our latest update you can now narrow down your contact search using tags even more than before. We have added 4 types of tag searches.
Includes all - Contacts will have all tags defined in the selector
Includes any - Contacts will have at least one tag defined in the selector
Doesn't include all - Contacts will not be included that have all of the tags in the selector
Doesn't include any - Contacts will not be included that have at least one of the tags in the selector