Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
wang yidan » wang yan
kang chen » chang chen, jane chen, kang han
zhang min » zhang ming, zhang xin, chang min
wang dan » wang yan, wang ban, wang yang
min hong » amin hong, tin hong, min hyoung
hong zhi » zhong zhi, hong ghi, zhang zhi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yidan ((wang dan) or (kang chen)) cheng zhang min hong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan ((wang dan) OR (kang chen)) cheng zhang min hong zhi ;*.