Anywhere in the frontend where filtering on tags is possible, the choice is always "And/Or" or "Or". However in many cases it is required to have a filter on the same tag with "And":

For example, I want to filter on al Zabbix server problems:

This however shows all problems tagged with target=zabbix and all problems tagged with target=server.

If possible, please make this as customizable as on the LLD Filters:

Or at least provide a separate "And" next to the "And/Or" and "Or" buttons. I think this would be sufficient to cover most cases.