Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
cost sharing » risk sharing, cost savings
zhang ying » zhang ming, zhang jing, zhang ping
zhang ting » zhang ming, zhang jing, zhang ping
der cost » oder cost, user cost, debt cost
how shih » how six, how she

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: cheng ((zhang ying) OR (zhang ting)) der cost sharing risk how shih ;~.
• Adding a wildcard symbol may retrieve word variants: cheng ((zhang ying) or (zhang ting)) der cost sharing risk how shih ;*.