What you basically do is: Go to google.com, enter the thing you search and add "site:auran.com" to that search. That way it will search for those terms on this website.
It is the only way for a three-letter search, but even for searches over three letters I always use a site-restricted Google 'advanced' search in preference to the internal search. It invariably gives more relevant returns than the internal search and works out quicker in the long run. Albany to Newark via Atlanta isn't a bad option if it's on a rocket sled and the direct route is only serviced by a Model T....
