Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
cost during » boost during, crust during, west during
risk cong » risk coping, risk among, risk along
mean big » mean log, can big
than big » than bling, can big, than bad
end cost » end close, land cost, end iot
yan big » can big, land big
wang » wing, wan

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 OR lang) ((((yan big) OR (mean big))) OR (than big)) end cost during risk cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((((yan big) OR (mean big))) or (than big)) end cost during risk cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((((yan big) OR (mean big))) or (than big)) end cost during risk cong shu ;*.