Perhaps you should try some spelling variations:
costa sharing » data sharing, loss sharing, asia sharing
cost sharing » risk sharing, cost savings
wang tan » wang yan, wang ban, wang dan
tan ying » fan ying, ran ying, tan yang
long ago » long arm
long des » longum des, long days, long did
ying au » ying zhu, ying hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang tan ying au ((costa sharing) OR (cost sharing)) tan ((long ago) or (long des)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang tan ying au ((costa sharing) OR (cost sharing)) tan ((long ago) OR (long des)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang tan ying au ((costa sharing) OR (cost sharing)) tan ((long ago) or (long des)) ;*".