Perhaps you should try some spelling variations:
past sharing » cost sharing, past caring, based sharing
case sharing » care sharing, clause sharing, based sharing
bin zhang » binh thang, li zhang, jia zhang
zhang man » zhang fan, zhang yan, zhang han
man han » man hat, man can, man kann
kong » long, hong, ong

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

• Performing a fuzzy search may retrieve terms with similar spellings: bin zhang man han ((past sharing) OR (case sharing)) food (kong or pong) (sar or saur) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bin zhang man han ((past sharing) OR (case sharing)) food (kong OR pong) (sar OR saur) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bin zhang man han ((past sharing) OR (case sharing)) food (kong or pong) (sar or saur) ;*".