Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
wang yuhan » wang luhang, wang yan, wang yidan
yuhan wang » yuan wang, yan wang, yuhuan huang
kang minah » sang minh
jeang yean » jeong yeon
wang hai » dang hai, wang hui, shang hai
jin kang » jin chang, jin kyung, jing fang
hai jin » hai xin, cai jing

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

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