They don't.
While there was some concern about sponsored links (paid advertising that would automatically put certain links near the top of the results page) a few years back, they have since adopted a model where all such paid links are marked and isolated (typically a pink box on the top of the page which includes the words "sponsored link" or on one of the side bars.
It is where you can search anything you wanted to. Yahoo ang Google are example of search engines.
Yes there is search engines for assets. Just google it on google and you can find some many search engines for assets.
because the other search engines google redirects you they own
The 4 most popular search engines in the are: Google Bing Yahoo DuckDuckGo
Bing, Google and Yahoo are the main search engines.
Google all the way matey
Google & Yahoo are two main search engines.
Google is the biggest search engines.
Crawler based search engines such as google .com HUman powered directories and Hybrid search engines
Horizontal search engines are general-purpose search engines such as Google and Yahoo. Vertical search engines, meanwhile, are specialized by content such as Trulia, Mocavo and Yelp.
Google & Bing are only trusted Search Engines,Yahoo taking search data from Bing.
Google, Yahoo, MSN.. are search engines. It's a place to find information on internet.