Umm, the search function is so lame that if the op does as you suggest, e.g. search for 'CMB', they'll be rewarded with "Sorry - no matches. Please try some different terms."

[You no longer get a warning when you type in a short search term, but FT still disallows searches with terms that are shorter than 4 letters, so don't even think about searching for your favorite airline or airport! "Would stress the server too much" says an admin. For whatever reason, they've opted not to add more horsepower, which can also cause the long page load times we sometimes "enjoy".]