Perhaps you should try some spelling variations:
chen yugang » chen huigang, chen yang, chen yulan
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
min seung » min jeong
min hong » amin hong, tin hong, min hyoung
yu chen » yu cheng, yi chen, yulu chen
yi yu » yi kyu, yi yue, yi wu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang yang)) yi yu chen yugang ((min seung) or (min hong)) joon ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yang)) yi yu chen yugang ((min seung) OR (min hong)) joon ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) yi yu chen yugang ((min seung) or (min hong)) joon ;*.