If you search for something in Firefox, the results are displayed in the same tab by default. Many times when you are doing a search, you don’t want to navigate away from the current page and you would rather get the search results in a new tab. Here’s how to do that in Firefox:
1. In the address bar, type about:config
2. Filter results by typing browser.search.openintab
3. You will see the value set to false
4. Right-click and from the menu choose Toggle
That’s it. As soon as you click on Toggle, the value would be changed to True and your search results would now open in a new tab. This small tip turns out to be quite useful if you do a lot of searches from your browser instead of going to Google or Bing home page.