Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
zhang ying » zhang ming, zhang ping, zhang ting
zhang jing » zhang ming, zhang jin, zhang ping
among shu » cong shu, among eu, among sex
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((zhang ying) OR (zhang jing)) ((eu cost) OR (der cost)) sharing risk among shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((zhang ying) or (zhang jing)) ((eu cost) OR (der cost)) sharing risk among shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((zhang ying) or (zhang jing)) ((eu cost) OR (der cost)) sharing risk among shu ;*.