Google Analytics
https://www.google.com/analytics/reporting/dashboard?id=3865312&scid=1967692
Site Search analytics
Site Search contains reports about the visitors using the 'search' functionality on your website. Many websites contain a search engine in order to bring relevant information to the user. Google Analytics Site Search reports deliver many useful pieces of information - for example, they can help you analyze how people use the search functionality on your site, and report its conversion metrics.
https://www.google.com/analytics/siteopt/exptlist?siteopt_acct_created=&account=4882982
-- marcg - 02 Jul 2008