Perhaps you should try some spelling variations:
credit during » credit scoring, credit rating, exit during
sound credit » should credit, bond credit, fund credit
crises moral » crises model, crises jordan, crises models
crises were » crisis were, crises korea, classes were
wang yang » wang yan, wang liang, wang yanling
yang ying » yang yang, yang jing, huang ying

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang ying sound credit during ((crises moral) or (crises were)) six ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ying sound credit during ((crises moral) OR (crises were)) six ;*.