Search50.co is only aimed to push lots of adverts and sponsored links within the searches performed by the users.
This mostly happens when the browser is infected with any Adware which can strike onto any kind of browse. Well, most of the time downloading freeware/shareware programs, clicking on infected links or visiting malicious pages are the reason of such infection. Search50.co has the ability to modify the start page, new tab, and search settings of the attacked browser. Thus, your preferred homepage will be substituted by its own domain that delivers dubious search results. So, if you wish to get the worthy results and end up being redirected to questionable pages, then you must go for complete removal of Search50.co hijacker.