Why google don't implement basic boolean operator logic is beyond me. MH has -lbrace and -rbrace so you can wrap -and -or and -not up properly. Once learned, you can ask any question.

With google+ they had the same problem. How to say, @friends not @josh so you can do a secret birthday party for josh. The primitives here are simple. I asked them several times why they didn't do things like this and they said "to hard to explain to ordinary users" which frankly I thought was a cop out. I AM an ordinary user.