Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yidan, fang yuan
yuhan chen » sudan chen, yuan cheng, yun chen
wang ning » wang jing, wang liang, wang yang
chen yang » chen rong
yang jun » yang jui, pang jun, yang jin
kang hay » eang hay, dang hai, kang tae
kang han » kang chen, kong hang, zhang han

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: ((wang ning) OR (wang yan)) wang yuhan chen yang jun ((kang hay) OR (kang han)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang ning) or (wang yan)) wang yuhan chen yang jun ((kang hay) or (kang han)) ;*.