Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
sharing risk » sharing best, during risk
wang zhang » wang zheng, wang luhang, zhang zhang
zhang ying » zhang ming, zhang jing, zhang ping
hua cost » a cost, eu cost, run cost
der cost » oder cost, user cost, debt cost
how shu » how she, how shih, how slum

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: wang zhang ying ((hua cost) OR (der cost)) ((sharing risk) OR (during crisis)) how shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang zhang ying ((hua cost) or (der cost)) ((sharing risk) or (during crisis)) how shu ;*.