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

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 juan wang hair gene anh minh ((((jeong yeon) OR (jeang yean))) OR (seung youn)) ;~.
• Adding a wildcard symbol may retrieve word variants: feng juan wang hair gene anh minh ((((jeong yeon) or (jeang yean))) or (seung youn)) ;*.