Perhaps you should try some spelling variations:
cheng ming » cheng bing, cheng ling, chen ping
zheng min » zhang ming, chang min, zheng liu
jeong shu » jeong su, cong shu
wan yan » wang yan, nan yan, wai yan
yan gan » yan guan, yan clan, yan wang
li chen » jui chen
yi chen » jui chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan gan ((li chen) or (yi chen)) ((zheng min) OR (cheng ming)) jeong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan gan ((li chen) OR (yi chen)) ((zheng min) OR (cheng ming)) jeong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan gan ((li chen) or (yi chen)) ((zheng min) OR (cheng ming)) jeong shu ;*".