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 fang » zhang fan, zhang zhang, zhang yan
coping shu » cong shu
end cost » end close, land cost, end iot
eu cost » au costa, der cost, eu court

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) OR (zhang fang)) ying ((eu cost) OR (end cost)) sharing risk coping shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang zhang) or (zhang fang)) ying ((eu cost) OR (end cost)) sharing risk coping shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang zhang) or (zhang fang)) ying ((eu cost) OR (end cost)) sharing risk coping shu ;*.