This is a keyword search. Not every word in indexed, rather only those key words found on the pages. This includes all page titles and sub titles and selected words on the page within each section of the site. The benefit of this type of search over others is that you only get a small number of results, rather than hundreds or thousands of pages listed, many of which may or may not be related to your search.

For example; do a search on the word "run" in the Hot Rod Tours section.

A new window will pop-up listing all the pages with the word "run" in them, note in the results that for every page found, there is a link to the page and a list of the other key words for the page.

If your search is unsuccessful it does not necessarily mean that the word will not be found on a page somewhere.