Perhaps you should try some spelling variations:
credit rationing » credit rating, credit ratings
rationing volume » nation volume
volume change » volume chapter, volume charts
change shu » change saul, change sea, change six
wang yong » wang yang, wang hyoung, wang yan
dong » doing, long, done

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 sin) OR (wang yong)) a rural credit rationing volume change shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((dong sin) or (wang yong)) a rural credit rationing volume change shu ;*.