One of the great features of FF was the search bar where one could load various search providers (google, shopping, torrents, etc) and then select that and search. That has been replaced by onesearch bar which being new has caused consternation to me and many. Now in Firefox 34, that has disappeared to be replaced by intelligent guessing. Googling brought this solution which is so far working for me. To get the old style back, right click on FF at top, and then tick menu bar. Then, from menu bar--help-troubleshooting information. Now, type this address: about:config Find the below preference browser.search.showOneOffButtons Double click to turn its value to false. Restart the browser for the changes to apply. Now one-click searches UI gone and you get the old style great search. I use that for torrentz.eu, kickass, amazon, etc.
@acyuta, Firefox is my favorite browser... Since the time of Windows XP. Version 34.0.5 works well! Thanks again!