Perhaps you should try some spelling variations:
sharing gains » sharing savings, learning gains, securing gains
rent sharing » risk sharing, rent seeking, cost sharing
dong hoang » hong hong
daun yang » du yang, tan yang, un yang
chong yun » chang yun, hong yu, chen yun
dan yang » tan yang, wang yang, yang yang
yang hua » wang hua, yang hui, ying hua
hua rent » hua ren

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