Perhaps you should try some spelling variations:
close during » else during, glucose during, closed string
during risk » using risk, during crises, during crisis
risk coping » risk pooling
coping shu » cong shu
wang yang » wang yan, wang yanling
end close » und closed, end cost
yang end » yang anda, yang mind, yang d

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) OR (wang liang)) yang end close during risk coping shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang liang)) yang end close during risk coping shu ;*.