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 kyung » jin kyung, min hyoung, min keying
han kyung » han kyul, han heung, jin kyung
yi chen » jui chen
yi yi » yin yi, li yi, qi yi

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 yi chen yugang ((min kyung) or (han kyung)) joon ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yang)) yi yi chen yugang ((min kyung) OR (han kyung)) joon ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) yi yi chen yugang ((min kyung) or (han kyung)) joon ;*.