S e a r c h M e . i n

AdSense for search is a free solution that allows publishers to place a search box on their site and earn revenue from relevant ads on the search results page.

AdSense for search offers you the following:

• choosing the content your users search: your site, a collection of sites you choose, or the entire web. You can also prioritize and restrict search to specific sections of sites.
• customization of look and feel - you choose the colors, location of the ads, and the option to host the results on your site or have Google host them for you.
• monetization of search results pages with targeted ads.

Source: What is AdSense for search? - AdSense Help Center