Perhaps you should try some spelling variations:
costa during » cortex during, courts during, roosts during
wang luhang » wang liang, wang lihong, wang yuhan
zhang zhang » zhen zhang, cheng zhang, zhang fang
during risk » using risk, during crises, during crisis
risk coping » risk pooling
coping shu » cong shu
au costa » can costa, _ costa, da costa
ying au » ying zhu, ying hua

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 luhang) OR (zhang zhang)) ying au costa during risk coping shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang luhang) or (zhang zhang)) ying au costa during risk coping shu ;*.