Perhaps you should try some spelling variations:
sharing gains » sharing savings, learning gains, securing gains
rent sharing » risk sharing, rent seeking, cost sharing
yong phang » ying chang
kong hang » kong heng, kong hong, kong land
der rent » der re, der rede
how low » how long
how so » how some, how slow

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yong phang) OR (kong hang)) der rent sharing gains ((how so) or (how low)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yong phang) OR (kong hang)) der rent sharing gains ((how so) OR (how low)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong phang) OR (kong hang)) der rent sharing gains ((how so) or (how low)) ;*".