Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
zhang yang » zhang yan, zhang fang, zhang ying
yang yang » wang yang, wang yan
yang yun » yang jun, tang yun, yang yue
yun cost » run cost, can cost, eu cost
a wang » _ wang, x wang, hwa wang
l wang » li wang, _ wang, x wang

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 yang yang yun cost sharing ((a wang) OR (l wang)) yue ;~.
• Adding a wildcard symbol may retrieve word variants: zhang yang yang yun cost sharing ((a wang) or (l wang)) yue ;*.