If searches from a browser's address bar are being redirected through the site Search.hr, then you have a unwanted browser addon or extension installed. These extensions will modify your browser's new tab page, possibly inject advertisements, and also redirect your address bar searches through Search.hr.
This article was published first at Remove the Search.hr Search Redirect (Uninstall Guide)
Article Link: https://www.bleepingcomputer.com/virus-removal/remove-the-search.hr-redirect