Perhaps you should try some spelling variations:
wang yidan » wang yan
wang liang » wang yang
yang yang » wang yang, wang yan
chen chan » chen chuan, cheung chan, chen chung
ong cheng » hong cheng, zong cheng, ong chong
cheng chu » cheng lu
chan ong » chan fong, chan eng, chan kang

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 yidan ((((wang liang) OR (you can))) OR (yang yang)) chen chan ong cheng chu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yidan ((((wang liang) or (you can))) or (yang yang)) chen chan ong cheng chu ;*.