Perhaps you should try some spelling variations:
sharing during » learning during, making during, sharing learning
rent sharing » risk sharing, rent seeking, cost sharing
dong sign » dong sin, among sign, dong bin
lang yan » wang yang, zhang yan, yang yang
ying hua » ming hua, wang hua, ying zhu
yang hui » yang jui, wang hui, yang muxi

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: ((lang yan) OR (wang yan)) ((ying hua) OR (yang hui)) rent sharing during dong sign ;~.
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (wang yan)) ((ying hua) or (yang hui)) rent sharing during dong sign ;*.