Perhaps you should try some spelling variations:
role during » rome during, solve during, role using
during risk » using risk, during crises, during crisis
yang lying » yang yang, yang jing, yang liang
wang liang » wang yang
lands role » banks role, wetlands role
do stable » how stable, two stable, _ stable
how shih » how six, how she

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: wang ((yang lying) OR (wang liang)) lands role during risk ((how shih) OR (do stable)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang lying) or (wang liang)) lands role during risk ((how shih) or (do stable)) ;*.