Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
yang yang » wang yang, wang yan
iran cost » urban cost, iran case, can cost
sharing a » sharing _
tan yang » tan ying, tan yong, tao yang
dan yang » daun yang, wang yang, adam yang
wong yue » wang yue, hong yu
a wong » y wong

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: "zhang ((((tan yang) OR (yang yang))) OR (dan yang)) iran cost sharing a wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: zhang ((((tan yang) OR (yang yang))) OR (dan yang)) iran cost sharing a wong yue ;*.