Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
jeng dong » eng hong, zeng doug
sing dong » sing kong, shin dong
yuan hui » yuan fei, jaan hui, tuan hua
nan yan » wang yan, qian yan, dan yang
yuan li » yuan lin, guan li, yuan zi
nan ya » nana yaa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nan yan) or (nan ya)) ((yuan hui) or (yuan li)) cheng zhang ((sing dong) OR (jeng dong)) sind ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nan yan) OR (nan ya)) ((yuan hui) OR (yuan li)) cheng zhang ((sing dong) OR (jeng dong)) sind ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nan yan) or (nan ya)) ((yuan hui) or (yuan li)) cheng zhang ((sing dong) OR (jeng dong)) sind ;*".