Han Chan Mun, moved to Russia.

My name is Vladimir Park, and I'm looking for my relatives. My great-grandparents were koreans, and I know only the name of my great-grandfather - Han Chan Mun.
He had spouse, her name was Kim (and Russian given name Maria). I also don't know their dates of birth, but they lived in Russia (Far East) where my grandmother was born, Uglovoe, Primorskiy Krai in 1936.
During Stalin's repression in 1930-th, they were sent to Central Asia, Uzbekistan, where I still live with my relatives.
I really want to know my roots and would love to meet my relatives.