Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
liang ying » liang liying, huang ying, jiang yajing
zhang ying » zhang ming, zhang jing, zhang ping
jie debate » die debatte, wide debate, aid debate
how scale » how stable, how small, how space
how safe » how safety, how space, how state

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((liang ying) or (zhang ying)) jie debate during crisis ((how safe) OR (how scale)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang ying) OR (zhang ying)) jie debate during crisis ((how safe) OR (how scale)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang ying) or (zhang ying)) jie debate during crisis ((how safe) OR (how scale)) ;*".