Perhaps you should try some spelling variations:
chuan ming » chan ming, chuan bang, yuan ming
wang wang » wang yang, wang liang, wang yan
wang yuan » wang yuhan, wang yan, fang yuan
code shu » code ctu
yuan li » yuan lin, guan li, yuan zi
li chen » yi chen, jui chen
code c » code _, code 2, code a

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 wang yuan li chen chuan ming ((code shu) OR (code c)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang yuan li chen chuan ming ((code shu) or (code c)) ;*.