You need to go to Russia and marry russian women, its the start of your russian nationality/.

У вас под рукой весь мир, имя которому интернет. Было достаточно ввести в любой поисковик половинку текста вашего сообщения, как обнаружилось не менее десятка сайтов, содержащих нужную вам информацию. Например: http://malaysia.mid.ru/0img/gr1.pdf или http://www.russia.uz/russian/consul/documents

No, there is no any special low which can provide you with visa if you are not married with your fiance, even you have common children. You can come to Russia to marry and make permission for temporary residence without quotas for three years.

I am planning to visit Russia for 2 Days. I know that I must register within 3 days of entry. Do I need to register at all if I am only in Russia for 2 days? (I am flying into KAZAN and out of KAZAN)from Istanbul. Thank you, Bernard