One of the most often used features on any website is the search box. The question is: does your search get the results visitors are looking for?
Google Custom Search may be the solution if your website doesn't have a solid search function.
It works just like a typical Google search, but the custom search only looks for the specified information on the website where the search is published. In other words, you can place a powerful Google search box into your website design and it lets people search just your site.
Just like a Google search, the user can see basic information associated with the term on the page, making it easier to determine if it is the right page to view.