“Stop Words” are the little words that search engines ignore, like “of” and “at” and “and” and “so” “on.” Google has begun to consider stop words in quoted search queries, so "to be or not to be" returns different results than to be or not to be.

Greg Notess pointed out in a post to the Search Engine Showdown Discussion List that the stop word trick is still possible, since Google continues to treat “the” as a non-searchable stop word. Just use “the” in place of the unknown word in a phrase.

LinkDiscuss (via Meerkat)