Perhaps you should try some spelling variations:
zhang ming » zhang xin
kang minah » sang minh
chang mae » chang ha, changes made
yan yang » yang yang, yao yang, dan yang
wong sau » wong sam, wong siu, wong shiu
wan yan » wang yan, nan yan, wai yan
yang li » yang lin, yang di, yang xi
li li » li lin, li l, li lu

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 li li ((kang minah) OR (((chang mae) OR (zhang ming)))) wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan yang li li ((kang minah) or (((chang mae) or (zhang ming)))) wong sau ;*.