What is search engine? What is its usage? Give example. -Technology

What is search engine? What is its usage? Give example. -Technology
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A search engine is a Website that lets you search the Internet for Websites on specific topics. Search engines turn the Web into a powerful tool for finding information on any topic. There are several benefits of using a search engine like,• Who is constantly on the computer everyday writing something.• The search engine provides a wealth of information for professional and personal use. e.g. Google
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Why wouldn't there be search engine for the site in addition to the www search box in every site?

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Description : Why would my omnibox stop working as a search engine...

Last Answer : answer:@longgone Well, how about going into “Settings”, and making sure that omnibox is even set to use Google as a search engine? Not very bright, are you?