I know, there are some people who can reach 2 or 3 digit dollars per day from adsense for search, I`ve now making some $ from adsense for content, but almost $0 for adsense for search, Have you any suggestion, tips, or tricks for adsense for search? I`ve read a lot information for adsense improvement in contextual advertisement, but almost never read information for adsense tips on adsense for search, thanks
Make sure the search is integrated into your pages and doesn't go off onto the Google search. To be honest the search is difficult to earn much of a revenue from.. You are not alone...
If they earn 2 or 3 digit dollars per day from adsense for search it means they earn much much more from adsense for content. I don't have any tips other than the couple 1812 gave to you. For me it's only a few dozens dollars a month, but I take them happily since google also provide a search service for my visitors, so it's a free search engine for me and I get paid instead of using my web server resources to provide an internal search engine.
I would recommend to make Google search limited to your site and put a search bar at the top and end of the page.
My personal experience, adsense for content is much much better than adsense for search, also google shares less revenue for adsense on search. Try to get more with content.