Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
cost saving » cost savings, costs savings, postal saving
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
yang yun » yang jun, tang yun, yang yue
hong yu » wong yue
a hong » _ hong, kia hong, tan hong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang yun ((cost saving) OR (cost sharing)) a hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang yun ((cost saving) OR (cost sharing)) a hong yu ;*".