The site without any special characters it the official one. Sometimes there are strange variations of a, e or i with two dots, a dot below etc. Hence, you should really be careful, when you click an external link. Even though the optics resemble the official site, it can be a fake phising site. You should rather type it yourself or bookmark the official site to be sure.
Furthermore, I am not sure, why the google search does not give you the official site at the top. It might be against their terms of service, not sure.