P: Allow searching for multiple same keywords in same photos

To clarify based on discussion the Lightroom Queen forum, @Reddwarf4ever wants to be able to search for photos that have multiple face rectangles labeled with the same name.  In that case, there will still be only one copy of the corresponding keyword applied to the photo.  There is a way to do this with the Any Filter plugin, but it's much slower and less convenient than a built-in search feature would be.