Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
rent sharing » risk sharing, rent seeking
john song » john wong, john bonn, john ngosong
yang hua » wang hua, yang hui, ying hua
yang jui » yang judy, yang di, yang xi
song jin » song min, shang jin, song shin
wang » wing, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or wan) yan ((yang hua) or (yang jui)) ((rent sharing) OR (cost sharing)) john song jin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) yan ((yang hua) OR (yang jui)) ((rent sharing) OR (cost sharing)) john song jin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yan ((yang hua) or (yang jui)) ((rent sharing) OR (cost sharing)) john song jin ;*".