Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
zhang ying » zhang ming, zhang jing, zhang ting
zhang ping » zhang ming, zhang jing, zhang ting
risk hong » risk among, risk along, risk how
hua cost » eu cost, run cost
hong shu » cong shu, tong shui, wong shiu
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 ying) OR (zhang ping)) ((hua cost) OR (a cost)) sharing risk hong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhen ((zhang ying) OR (zhang ping)) ((hua cost) or (a cost)) sharing risk hong shu ;~".
• Adding a wildcard symbol may retrieve word variants: zhen ((zhang ying) OR (zhang ping)) ((hua cost) or (a cost)) sharing risk hong shu ;*.