Perhaps you should try some spelling variations:
credit training » credit trading, credit rationing, credit rating
training value » trading value, obtaining value, driving value
equal credit » dual credit, equity credit, rural credit
value cong » value co, value closing, value change
yang yang » wang yang, wang yan
can equal » change equal

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(((dong OR doing) sin) OR (yang yang)) can equal credit training value cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: (((dong OR doing) sin) OR (yang yang)) can equal credit training value cong shu ;*.