Perhaps you should try some spelling variations:
sharing gains » sharing savings, learning gains, securing gains
rent sharing » risk sharing, rent seeking, cost sharing
done using » line using, move using
wang yang » wang yan, wang liang, wang yanling
hua rent » hua ren
wong sam » wong lai, kong sar, von sam
wong sau » wong siu, wong shiu, wong lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((done using) or (wang yang)) ya hua rent sharing gains ((wong sam) or (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((done using) OR (wang yang)) ya hua rent sharing gains ((wong sam) OR (wong sau)) ;.
• Adding a wildcard symbol may retrieve word variants: ((done using) or (wang yang)) ya hua rent sharing gains ((wong sam) or (wong sau)) ;*.