Perhaps you should try some spelling variations:
cheng tan » cheng han, chen tan, cheng guan
yang yang » wang yang, wang yan
wai hoong » kai hong
hoong sau » wong sau
yang yun » yang jun, tang yun, yang yue
wan yan » wang yan, nan yan, wai yan
yang xi » yang di, yang yi, yang jui
tan wai » tan kai, than war

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: wan yan ((((yang yun) OR (yang yang))) OR (yang xi)) cheng tan wai hoong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan ((((yang yun) or (yang yang))) or (yang xi)) cheng tan wai hoong sau ;*.