Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
sharing his » sharing risk, sharing big, sharing dps
wang yao » wang yan, yang yao, wang tao
gang yao » yang yao, wang yan, ganga ya
yang hua » wang hua, yang hui, ying hua
hua cost » a cost, eu cost, run cost
son shu » cong shu

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: "((wang yao) OR (gang yao)) yang hua cost sharing his son shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yao) OR (gang yao)) yang hua cost sharing his son shu ;*.