Perhaps you should try some spelling variations:
zhang ming » zhang xin
zhang yan » zhang fan, zhang jian, wang yan
yan wang » yuan wang, yang yang, qian wang
know who » know what, know when, know how
hung seo » hong seo, hung ho
wang a » wang _, fang a, lang a
a know » a known, _ know, i know

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: yan wang a know who ((zhang ming) OR (zhang yan)) hung seo ;~.
• Adding a wildcard symbol may retrieve word variants: yan wang a know who ((zhang ming) or (zhang yan)) hung seo ;*.