You can filter the items to retrieve by the presence or absence of a specific tag, by giving the appropriate arguments to the Tag Filter input parameter of the Get Next Item action.
You can also use a combination of tags in the Tag Filter parameter, separated by semi-colons.
For example, by setting the Tag Filter to be “+Work Type1;+Customer Type2;-Work Source1” the next item with the “Work Type1” and “Customer Type2” tags and without a “Work Source1” tag will be returned.