Site admins can use search result count data to see what searches are returning no results or possibly too many results and use this to hone search keywords.
The following snippet should be found as high in the head as possible, currently it is in the body:
Code Sample
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The following snippet should be found immediately after <body>
Code Sample
Every time a search is executed on the site we will capture the number of results, including 0 using GTM (See: http://mixedanalytics.com/blog/number-search-results-google-analytics-gtm/)