Perhaps you should try some spelling variations:
rent sharing » risk sharing, rent seeking, cost sharing
gains trade » trains trade
gains rate » gains water, gains made, gains greater
wang qian » wang qiao, wang qin, wang liang
qian wang » yiqian wang, qian rong, qian yan
gas trade » u.s trade, us trade
hua rent » hua ren

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang qian wang hua rent sharing ((gains rate) or (((gains trade) OR (gas trade)))) (sar or saur) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang qian wang hua rent sharing ((gains rate) OR (((gains trade) OR (gas trade)))) (sar OR saur) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang qian wang hua rent sharing ((gains rate) or (((gains trade) OR (gas trade)))) (sar or saur) ;*".