Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
sang minh » kang minah, anh minh, song min
yang mind » yang cindy, yang jin, tang min
yang hai » dang hai, yang hui, shang hai
hai rent » hai ren

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang hai rent ((sang minh) or (yang mind)) jeong hyeok ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang hai rent ((sang minh) OR (yang mind)) jeong hyeok ;*.