I just found a search phrase that shows: Global Monthly Searches: 5,000,000 How reliable is the keyword tool?
On the left side of the keyword tool, there is a section called "Match Types." Uncheck "Broad" and check "Exact." Broad tells you the numbers for a lot of related terms, and is generally considered to be useless.
It's reliable in most situations. Exception: Current events, such as "Alabama hostage" (which has 0 according to the keyword tool)