Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
during coal » burning coal, during cold, during load
during risk » using risk, during crises, reducing risk
aya during » asia during, area during, usa during
coal cash » coal ash, coal case, total cash
wang aya » wang hua, wang yan, wang all
how safe » how safety, how space, how scale

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 aya during coal cash ((during crisis) OR (during risk)) how safe ;~.
• Adding a wildcard symbol may retrieve word variants: wang aya during coal cash ((during crisis) or (during risk)) how safe ;*.