Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
cost saving » cost savings, costs savings, postal saving
wang liang » wang yang
rate among » rates among, trade among, water among
among hiv » among heis, among di, among hr
yang jui » yang judy, yang di, yang xi

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: wang liang ((yang jui) OR (wang hua)) ((cost saving) OR (cost sharing)) rate among hiv ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ((yang jui) or (wang hua)) ((cost saving) OR (cost sharing)) rate among hiv ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang ((yang jui) or (wang hua)) ((cost saving) OR (cost sharing)) rate among hiv ;*.