The default search page that comes with Drupal 7 is fine for basic content. However, it’s difficult to modify if you want to change what is indexed or how the search results are displayed.
Introduction to Search API
In this section, you’ll be introduced to Search API and learn how to use it to create flexible search pages.
Not happy with the default search page in Drupal? Learn how to create a custom search page with the core Search module and Views.