Perhaps you should try some spelling variations:
zhang zhang » zhen zhang, cheng zhang, zhang fang
wang lihong » wang liang, wang shiyong
cost during » boost during, crust during, west during
during risk » using risk, during crises, during crisis
risk cong » risk coping, risk among, risk along
ping eu » ping ku, ping yu, ping ceo
eu cost » au costa, der cost, end cost

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((zhang zhang) OR (wang lihong)) ping eu cost during risk cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((zhang zhang) OR (wang lihong)) ping eu cost during risk cong shu ;*.