Perhaps you should try some spelling variations:
crises coping » crises shaping, crises china, crises using
wang zhang » wang zheng, wang luhang, zhang zhang
zhang ying » zhang ming, zhang jing, zhang ping
coping shu » cong shu
user cost » user costs
der cost » oder cost, debt cost, diet cost
eu cost » au costa, end 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 ying ((((eu cost) OR (der cost))) OR (user cost)) during crises coping shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang zhang ying ((((eu cost) OR (der cost))) or (user cost)) during crises coping shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang zhang ying ((((eu cost) OR (der cost))) or (user cost)) during crises coping shu ;*.