The most common cause of this is that your ISP's DNS servers are not resolving the IP address for the tracker for some reason. This seems to be a common problem. There are 2 ways that you can fix this:
Change your computer or network's DNS settings to use Google DNS by using 8.8.8.8 and 8.8.4.4 as the DNS servers.
Modify your computer's hosts file by adding two lines. If you're unsure of how to change your hosts file, I would encourage you to check out this comprehensive guide. The two lines you want to add should read as follows:
77.247.179.58 tracker.gaytorrent.ru
77.247.179.58 tracker.gaytorrent.tw
Once these lines are added, you should be able to resolve the tracker's IP, without the need for a DNS lookup. This method will work, regardless of what DNS servers you're using.