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
end close » und closed, end cost
risk cong » risk coping, risk among, risk along
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 (end close)) sharing risk cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang zhang ying ((eu cost) or (end close)) sharing risk cong shu ;*.