Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yang ping » yang jing, yang liang, yang using
ping wang » ping pong, hong wang
yuhan tan » wuhan can
tang chun » wang chun, tung chung, kang chen
tan yang » dan yang, tan ying, tan yong
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: yang ping wang yuhan tan yang di ((kang tae) OR (((kang han) OR (tang chun)))) ;~.
• Adding a wildcard symbol may retrieve word variants: yang ping wang yuhan tan yang di ((kang tae) or (((kang han) or (tang chun)))) ;*.