Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
risk tong » risk among, risk along
tong shui » tong hui, cong shu, gong hui
end cost » end close, land cost
yan big » land big, mean big, than big
can big » can bring, mean big, than big
end iot » end note
wang » wing, wan, lang

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