Google search engines is having new feature now, if you do Google search at google.com/instant/ you will get search results as soon as you start typing search keys. It is really fast.
If you have slow internet connection, you may get the real time search result with some delay.
After finishing each word of the search term, new search results come as soon as you finish any word.
There is no need to sign-up Google account for using this facility.
If you don’t like this facility, close the browser, open again Google.com. It will show default page if Google.com