Don't worry if you find a large number of results. In fact, use more than a couple of words when searching. Even though the number of results will be large, the most relevant content will always appear at the top of the result pages. You can speed up the search process by choosing a record type or location in the search form. You can link words and numbers together into phrases if you want specific words or numbers to appear together in your result pages.
Searches are case insensitive.