Right click on the icon to the left of the URL in the browser's nav bar, and choose "Edit Search Engines."
(If this doesn't work, try navigating to chrome://settings/searchEngines directly.) Scroll to the bottom and add a new entry:

• Set the name to "FlyerTalk"
• Set the keyword to "flyertalk.com/forum/usercp.php" or "flyertalk.com" (depending on which is the first result if you start typing flyertalk into your URL bar). Or, make one for both.
• For the query URL, put this in:
  
  Code:

  https://www.google.com/search?q=site%3Aflyertalk.com+%s

And boom, you've got instant nav-bar google search for FT. Just start typing flyertalk into the URL bar, press <tab>, and you've got an instant FT search.