Being able to search for genres and tags at the same time.

So I've been searching for books related to film history, and because of that, I've been using the film tag to search for them. However, I've noticed that there are several movies and fiction books included because they also have the film tag in them. So I asked people in these forums if you could search for items that specifically have both the nonfiction genre and film tag on them so that I could avoid those. Though I was told there aren't, I got help finding alternative ways to search for them and I really appreciate that. Even then, I do think that it would be easier to search of them if there was a feature added so that you could search for items that have a specific genre and specific tag on them at the same time.