Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
wide debate » aid debate, life debates, nudge debate
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
jie debate » die debatte, aid debate, ce debate
how safe » how safety, how space, how scale

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang ((jie debate) OR (wide debate)) during crisis how safe ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang yang ((jie debate) OR (wide debate)) during crisis how safe ;*.