Perhaps you should try some spelling variations:
cheng ming » cheng bing, cheng ling, chen ping
chen cheng » chen chung, chen zheng, chen zhen
ming cong » minh cong, ming kong, ming code
nana yaa » nan ya, nan yan, nanay a
yan yan » yan yuan, nan yan, yang yang
yu chen » yu cheng, yi chen, yulu chen
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yan) or (nana yaa)) yu chen cheng ming cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yan) OR (nana yaa)) yu chen cheng ming cong shu ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yan yan) or (nana yaa)) yu chen cheng ming cong shu ;*.