Perhaps you should try some spelling variations:
credit driving » credit driven, credit training, credit rating
driving value » drive value, delivering value
dual credit » rural credit, deals credit, equal credit
wang liang » wang yang
value co » value _, value a
a dual » _ dual
co shu » cong shu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((dong or doing) sin) or (wang liang)) a dual credit driving value co shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((dong OR doing) sin) OR (wang liang)) a dual credit driving value co shu ;*.