Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
chen zhang » zhen zhang, chen zheng, chen shuang
ming jeong » min jeong, ming kong
jeong shu » jeong su, cong shu
yan yuan » yan guan, fang yuan, nan yan
yuan li » yuan lin, guan li, yuan zi
wang » wan, lang

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 OR wing) yan yuan li ((chen zhang) OR (cheng zhang)) ming jeong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) yan yuan li ((chen zhang) OR (cheng zhang)) ming jeong shu ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) yan yuan li ((chen zhang) OR (cheng zhang)) ming jeong shu ;*.