how Dumb is AA.com or the coder behind it?
I am sure that AA could make it retrieve EVERY possible result, but that would take too long and customers would complain the website is slow.. its a loose loose situation for them.
think how long sidestep.com takes to get all its results. Sidestep uses AJAX technology which allows it to update on the fly but the time from clicking submit til all the results are displayed can take up to 1 minute, now if AA.com was to create a search that returned every possible and then sorted out the logical (or what they think the user thinks is logical ) ones this could take about a minute, which is a long time to keep a users attention at a loading website.