Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
zhang ying » zhang ming, zhang jing, zhang ping
der cost » oder cost, user cost, debt cost
au costa » can costa, _ costa, da costa
eu cost » end cost, eu court, run cost
how she » how some, how safe, how shih
zhen » zheng, when, chen

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

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