Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
risk during » risks during, risk using, crisis during
risk coping » risk pooling
coping shu » cong shu
yang jui » yang judy, yang di, yang yi
yan zhi » yan zi, wang zhi
yang xi » yang di, yang yi

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: wing ((yan zhi) OR (((yang xi) OR (yang jui)))) chain risk during risk coping shu ;~.
• Adding a wildcard symbol may retrieve word variants: wing ((yan zhi) or (((yang xi) or (yang jui)))) chain risk during risk coping shu ;*.