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

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