split words and suggest:- "biju krish" do not give suggestion in google search. but words "biju" and "krish" separately will so why not Firefox query them separately then combine and provide them to user.

How to best split up the results should be left to the provider, in my opinion. Arbitrarily stitching together different sets of results is likely to be wrong just as much as it is right, and leads to unpredictable behavior. An algorithm for accurate and useful results would be difficult to implement correctly.

(In reply to comment #1) > How to best split up the results should be left to the provider, in my opinion. I agree. So when there is no suggestion only we should do > leads to unpredictable behavior. that wont be an issue for user, as it is only a suggesion. in this case i was searching for "biju krishnan" in google when i entered "biju kr" google stop giving suggestion. so we could start by chopping of the first word, in this case chop off "biju" if we were searching for "biju patnaik chief minister" on "biju patnaik c" google suggestion stops so we remove "biju" and get suggestion for "patnaik c" when we get result from google prepend "biju" when that stops chop "biju" and "patnaik" now for "chief m" google will starts giving "chief minister" that time the prepend "biju patnaik" will give the right search word

providers can do what they want, we're not going to second-guess them.