How to effectively search in the userguide?

[eluser]baZzz[/eluser]
Thx Derek, loving it already! :-)

And guess what?! I figured out what's going wrong with the search! If you Google for "site:www.ellislab.com/codeigniter/user-guide/" (which is used by the search function as well), you only get 23 results. However, searching for "site:ellislab.com/codeigniter/user-guide/" (that's without the www. in front) gives back 104 results! So apparently most pages are indexed without the 'www.'. I've tried it already and the search is producing far better results if you leave it out.
Check it yourself, search for 'validation' as it is right now and do this, search for 'validation' while leaving out the www..

Can you fix the search for us?