Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
during risk » using risk, during crises, reducing risk
wang yang » wang yan, wang liang, wang yanling
yang big » yang jing, yang di, yang xi
end exit » und exit, aid exit, eu exit
wong sau » wong sam, wong siu, wong shiu
big end » big bend, big dead, big head

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 yang big end exit ((during risk) OR (during crisis)) wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang big end exit ((during risk) or (during crisis)) wong sau ;*.