Smart Playlist Error

Hello community,
I would like to be looking at a Smart Playlist following things.
eg.

Key 1 = 1A
Key 2 = 1B
Score = min 3 stars

If now all is selected nothing happens because the search does not work?
When is now just any selected studied and but he is also something not what you prescribe.

How does the search correctly or the program has an error.