Most out-of-the-box site search functions return results based on how many times a certain keyword or key phrase is mentioned within a page on your website. For example, the more times a keyword appears in the copy, the more relevant site search believes that page to be, and so this page will appear at the top of the search results.
But this doesn't mean it's the most relevant page for the visitor.
Effective site search improves the user experience and guides your visitors to where they want to go.

Intelligent and predictive site search
Having an intelligent and predictive site search engine, such as Coveo, means your brand can provide the most relevant information to your audience, based on which pages people click on most. As a Coveo partner we can work with your project team to deliver a advanced search capabilities to your website.
Sitecore Boost Values, a special feature that comes as part of the Sitecore Experience Platform, can also help deliver more relevant site search results, by allowing you to decide which pages will be more relevant to your visitors based on the words they search for, pushing those pages to the top of results to help improve site engagement.