I can't remember if i read it somewhere, but I think you aren't allowed to display adsense ads in a search results page for some reason. Is anyone able to confirm or deny this, or to what extent it is true.
adsense have it's own Adsense for Search you can use that... and what kind of search result you talking about im not sure but adsense for search will work for you... you can either search net with that or search your current page