Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
sharing risk » sharing best, during risk
wang zhang » wang luhang, zhang zhang, wang liang
wang zheng » tang zheng, wang zhenpo, fang sheng
ying hua » ming hua, wang hua, ying zhu
hua cost » a cost, eu cost, run 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) OR (wang zheng)) ying hua cost ((sharing risk) OR (during crisis)) how shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang zhang) OR (wang zheng)) ying hua cost ((sharing risk) or (during crisis)) how shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang zhang) OR (wang zheng)) ying hua cost ((sharing risk) or (during crisis)) how shu ;*.