If searches from a browser's address bar are being redirected through the site Smashappsearch.com, then you most likely have a unwanted browser extension or add on installed. These extensions will configure your browser's search provider so that searches are sent through Smashappsearch.com, which ultimately redirects to Yahoo.com, which shows the search results.
This article was published first at Remove the Smashappsearch.com Search Redirect

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