Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
sharing risk » sharing best, during risk
zhang zhang » zhen zhang, zhang fang, zhang han
cheng zhang » cheng han, zhen zhang, chen zheng
ying eu » ying zhu, using eu, ying hua
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((zhang zhang) OR (cheng zhang)) ying eu cost sharing risk how shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((zhang zhang) or (cheng zhang)) ying eu cost sharing risk how shu ;*.