Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
during risk » using risk, during crises, reducing risk
wang liang » wang yang
liang big » liang ying, liang li
head exit » hard exit
big head » big dead, big leap, big red
wong sau » wong sam, wong siu, wong shiu

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