Perhaps you should try some spelling variations:
rent sharing » risk sharing, rent seeking, cost sharing
ren shang » wei shang
john wong » john song, john bonn
wing yan » wang yan, wing ian, wing tan
wong sam » wong sau, wong lai, kong sar
yan hua » ya hua, wang hua, tuan hua
tan hua » tuan hua, wang hua, tan chia

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((yan hua) or (tan hua)) ((ren shang) OR (rent sharing)) john wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((yan hua) OR (tan hua)) ((ren shang) OR (rent sharing)) john wong sam ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((yan hua) or (tan hua)) ((ren shang) OR (rent sharing)) john wong sam ;*".