Yea some are missed even in all of these above ^.

http://labs.google.com

http://labs.google.com/personalized

which is VERY ELITE

http://www.google.com/help/operators.html
for commands

http://soople.com/ this one has search buttons that do all the advanced operators

That should be a good start.
_________________________
"Beware the Jabberwock, my son!
The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"