Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
zhang ming » zhang xin
ming der » ding der
der cost » oder cost, user cost, debt cost
west how » test how, lost how, cst how
bust how » bus how, just how, trust how
zhen » zheng, when, chen

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

• If you are trying to use Boolean operators, they must be ALL CAPS: zhen zhang ming der cost sharing ((west how) OR (bust how)) shu ;~.
• Adding a wildcard symbol may retrieve word variants: zhen zhang ming der cost sharing ((west how) or (bust how)) shu ;*.