Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
jeang yean » jeong yeon
fang yuan » wang yuhan, wang yan, meng yuan
yuan wang » yan wang, yuan kang, yuan chang
sang minh » kang minah, anh minh, song min
wang hai » dang hai, wang hui, shang hai
ren sang » lee sang, le sang, ren weng

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

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