Perhaps you should try some spelling variations:
cheng wang » chen wang, cheng zhang, chen yang
yang yang » wang yang, wang yan
ting ping » ting peng, ting ting, ting point
wang chen » kang chen, wang chun, chang chen
chen ping » chen rong, chen yang, chen wang
yu cheng » yu chen, _ cheng
ping shu » cong shu, ping ku, ping yu
dong di » dong sin

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 yang) OR (((ting ping) OR (dong di)))) ya yu cheng wang chen ping shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (((ting ping) or (dong di)))) ya yu cheng wang chen ping shu ;*.