Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
seung yeon » jeong yeon, seung joon, seung won
feng yuan » fang yuan, feng juan, meng yuan
yuan wang » yan wang, yuan kang, yuan chang
wang hair » dang hai, wang hui
hair gene » hair one
gene anh » gene bank, gene one

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

• If you are trying to use Boolean operators, they must be ALL CAPS: feng yuan wang hair gene anh minh ((jeong hyeok) OR (seung yeon)) ;~.
• Adding a wildcard symbol may retrieve word variants: feng yuan wang hair gene anh minh ((jeong hyeok) or (seung yeon)) ;*.