Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
cost sharing » risk sharing, cost savings
zhang ying » zhang ming, zhang jing, zhang ting
zhang ping » zhang ming, zhang jing, zhang ting
eu cost » au costa, der cost, end cost
how shu » how she, how shih, how slum

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: "cheng ((zhang ying) OR (zhang ping)) eu cost sharing risk how shu ;~".
• Adding a wildcard symbol may retrieve word variants: cheng ((zhang ying) OR (zhang ping)) eu cost sharing risk how shu ;*.