Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
wang zhang » wang zheng, wang luhang, zhang zhang
zhang ying » zhang ming, zhang jing, zhang ping
risk cong » risk coping, risk among, risk along
der cost » oder cost, user cost, debt cost
eu cost » au costa, end cost, eu court

You may be able to get more results by adjusting your search query.

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