Perhaps you should try some spelling variations:
cheng zhang » cheng han, chen zheng, china zhang
wang yidan » wang yan
ming zhong » xiang zhong, min hong, ming hung
kang chen » chang chen, jane chen, kang han
zhong zhi » zhang zhi, hong ghi, zhong tai
wang dan » wang yan, wang ban, wang yang

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: wang yidan ((wang dan) OR (kang chen)) ((cheng zhang) OR (zhen zhang)) ming zhong zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yidan ((wang dan) or (kang chen)) ((cheng zhang) OR (zhen zhang)) ming zhong zhi ;~".
• Adding a wildcard symbol may retrieve word variants: wang yidan ((wang dan) or (kang chen)) ((cheng zhang) OR (zhen zhang)) ming zhong zhi ;*.