Perhaps you should try some spelling variations:
rent sharing » risk sharing, rent seeking, cost sharing
sharing risk » sharing best, during risk
wang yang » wang yan, wang liang, wang yanling
yang yan » yang yang, wang yan, yang fan
hua rent » hua ren
wong sau » wong sam, wong siu, wong shiu
yan hua » tan hua, ya hua, wang hua
hong » long

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

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