Perhaps you should try some spelling variations:
costa sharing » cost sharing, data sharing, loss sharing
sharing risk » sharing best, during risk
risk coping » risk pooling
zhang ming » zhang xin
zhang jing » zhang jin, zhang ping, zhang ting
coping shu » cong shu
au costa » can costa, _ costa, da costa

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((zhang ming) or (zhang jing)) au costa sharing risk coping shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((zhang ming) OR (zhang jing)) au costa sharing risk coping shu ;*.