Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
chen wang » chen yang, chen rong, chen ping
wang dong » wang yong, wang hong, wang yang
ming hung » dang hung, fung hung, men hung
dong hoi » wong hoi, jong ho, dong di
chen zhe » chen zhen, chen e
hung seo » hong seo, hung ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: chen wang dong hoi ((chen zhe) or (cheng zhang)) ming hung seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chen wang dong hoi ((chen zhe) OR (cheng zhang)) ming hung seo ;*.