When you begin typing in Firefox's address bar, the results are a lot smarter than just a list of previously visited sites. To increase the number of these smart (or rich, as they're called) results, open abou t : con f ig in a new tab, and use the filter to search for browser.urlbar.maxRichResults double-click on it to change the value to anything you want.

Name:  Richer Results in Firefox's address bar.jpg
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