Searching for contact in South Korea for research help on adoption case

I am a private investigator looking to hire a reliable & efficient researcher in the area of Kyonggi-do, Bongwhi, Kyongsangbuk-do, Seoul , South Korea. My client was born in 1989 in Kyonggi-do and his birth parents were born in Bongwhi, Kyongsangbuk-do. I have birth parents names, age, a little bit of their background and the type of work they did. My ideal hire will be able to research, network and contact leads such as the adoption agency, The birthing home, Foster home, clinic, middle school , factory where birth mother may work. $250 bonus if you locate the birth mother and I will use you for future cases if you are dependable and do great work.