search engine is programming concept..there are some certain program written on that by which it works..the programming word is written in such a way that what ever we type in its search box it executed and give us the result from its database..
As an idea, it's worth considering. Leaving aside the question of what goes on under the hood, the more important question to address first is 'Why?' What will this new search engine offer that Google doesn't? I know that some people are really worried about the way Google tracks everything that you do. So these people switch over to DuckDuckGo. Well, DuckDuckGo isn't dead yet but it's not very alive either. So what's the selling point of your new search engine?