Here are some helfpul Google search comments from The Swiss Army Librarian entitled “Building Better Google Searches“:

“…Chris sent me a link that lists special strategies and syntax for searching Google more efficiently.
…a few that will be extremely helpful:
- +[stop word] - having the plus sign before a “stop word” (such as +not) forces the search to include that word, instead of ignoring it
- inurl: and intitle: - similar to site:, but this limits the search to words just in the web address or title field. Very useful for increasing relevancy on obscure information
- related: - lists websites that are ‘related’ to the domain you search for (ie,related:swissarmylibrarian.net)…
The page also gives some great examples of how these can be combined…
…There are also other lists, too, but this one was very helpful.”