Unless you mean specificslly Russian sites in Russian. But those are not going to be available for long since Runet is slowly separating and VPN is now as illegal as in China
No, even content hosted on YouTube. Some videos are almost impossible to search for even if they are linkable via YouTube. For instance, it's almost impossible to find the video of MSNBC hosts saying they will vote for Trump if Sanders becomes the Dem candidate. First result in Yandex. Both are vehicles for state propaganda obviously.
