It would be nice if we had an extra button to show specific tags or not. What I mean is if I tag the name of one person and the click the SPECIFIC button I get all the pictures that have ONLY that person. If I dont click on SPECIFIC, I get all the picture wuere that person appears.The same for multiple TAGS.
I'm not sure if I fully understand your request. Are you asking for the ability to show all photos with only one person in it? While I agree with you that it would be desirable to have more sophisticated boolean search capabilities, that would only work well if you are very compulsive with your tagging. For example, if I only wanted to search for all photos of my daughter, I could construct a search in the Search box for my daughter, but I would also have to exclude the people who are normally in the photos of her, including my wife, son-in-law and my two grandkids. And this would only work 100%, if every single photo with these family members has been tagged with their name. Otherwise, the search will present photos of my daughter with other people who have not been tagged in that photo.
In any event, if you want to present a feature request to Adobe, you can fill out a form that you can find here.
As I indicated, it is possible to construct a search like that now. In case you are not aware, here is how to do it: