Pulled these up with a Google search:

http://hacks.mit.edu/ (search word "hacks")
http://www.stjoemanchester.org/ (search terms "blood donations")
http://www.museumtrail.org/SpanishIndianRoom.asp (Search terms "indian rugs museum")
any number of .org, .gov, and .edu come up with "George Washington"

The search terms above were sort of pulled out of the air, and were entered without quotation marks.

I've never had problems with .org, .edu, and so on. Found Mudcat that way, in fact.

I do not, however, use only one search engine. I use those I mentioned the most, but I also use Ask Jeeves, Dogpile, Lycos, and many others. Depends on what I'm looking for and how badly I want to find it. I find that Altavista is best for images, for instance.