Perhaps you should try some spelling variations:
rent sharing » risk sharing, rent seeking
cost sharing » risk sharing, cost savings
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
chong yun » chang yun, hong yu, chong en
yang hua » wang hua, yang hui, ying hua
chen yun » chen yu, chen yue, chen yiqun

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: dong yang yang hua ((rent sharing) OR (cost sharing)) minh ((chong yun) OR (chen yun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang yang hua ((rent sharing) OR (cost sharing)) minh ((chong yun) or (chen yun)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang yang hua ((rent sharing) OR (cost sharing)) minh ((chong yun) or (chen yun)) ;*.