Perhaps you should try some spelling variations:
zhang ming » zhang xin
ming hung » dang hung, fung hung, men hung
yan wang » yuan wang, yang yang, qian wang
pong how » wrong how, jong ho, bang how
yang hui » yang jui, wang hui, yang muxi
hung seo » hong seo, hung ho
zhen » zheng, when, chen

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 ((pong how) OR (yang hui)) zhen zhang ming hung seo ;~.
• Adding a wildcard symbol may retrieve word variants: yan wang ((pong how) or (yang hui)) zhen zhang ming hung seo ;*.