Perhaps you should try some spelling variations:
credit trading » credit training, credit rating, credit standing
trading value » trading volume, trading volumes, creating value
equal credit » dual credit, equity credit, rural credit
value cong » value co, value closing, value change
wang yang » wang yan, wang liang, wang yanling
can equal » change equal

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: (((dong OR doing) sin) OR (wang yang)) can equal credit trading value cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: (((dong or doing) sin) or (wang yang)) can equal credit trading value cong shu ;*.