Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
risk during » risks during, risk using, crisis during
can risk » chain risk
yang xi » yang di, yang yi, yang jui
yang du » yang di, yang d, yang mu
tan shu » than she
yan yi » yang yi, tan yi, yan zi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ((yan yi) or (yang xi)) can risk during risk ((yang du) or (tan shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing ((yan yi) OR (yang xi)) can risk during risk ((yang du) OR (tan shu)) ;*.