Perhaps you should try some spelling variations:
credit during » credit scoring, credit rating, exit during
debat during » debate during, debt during, exit during
crises how » crisis how
how space » how race
wai fan » wai fun, wai yan, cai fang
yang yi » yang di, yang jui
yang xi » yang di, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai fan ((yang yi) or (yang xi)) ((debat during) or (credit during)) crises how space ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai fan ((yang yi) OR (yang xi)) ((debat during) OR (credit during)) crises how space ;.
• Adding a wildcard symbol may retrieve word variants: wai fan ((yang yi) or (yang xi)) ((debat during) or (credit during)) crises how space ;*.