Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
risk coping » risk pooling
wang zhang » wang zheng, wang luhang, zhang zhang
zhang ying » zhang ming, zhang jing, zhang ping
coping shu » cong shu
land cost » land costs, land code, end cost
eu cost » au costa, der cost, end cost

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 zhang ying ((eu cost) OR (land cost)) sharing risk coping shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang zhang ying ((eu cost) or (land cost)) sharing risk coping shu ;*.