The solution is AdSense for search. This free, easy to implement product lets you place a Google search box on your website. It provides an additional layer of interactivity for your users, while helping you generate additional earnings from ads on the customizable search results page.
Here are some of our favorite AdSense for search features:
Site search: Allow users to search directly within your site to find the information they’re looking for without leaving your site.
Vertical search: Allow your users to search across multiple sites you select, including related sites you think users might find relevant or a network of sites that you own.
Keywords: You can use keywords to make search results more relevant to your audience and your site content. For instance, if you own a website about Pilates, you can enter keywords such as “exercise,” “fitness,” “meditation,” and “pilates.” As a result, when a user searches for “equipment,” the ads that appear will be specifically related to Pilates, rather than to any other types of equipment.
Ad location: You can optimize the location of your ads on search result pages. We recommend placing ads at the top and along the right-hand side, as we’ve found that this layout increases visibility and revenue.