Perhaps you should try some spelling variations:
wang luhang » wang liang, wang lihong, wang yuhan
luhang jing » huang jing, zhang jing
jin debate » gain debate, aid debate, un debate
how safety » do safety, co safety, new safety
jing jin » jing ji, ying jin, jing jia
how safe » how space, how scale, how state

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 luhang jing jin debate during crises ((how safe) OR (how safety)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang luhang jing jin debate during crises ((how safe) or (how safety)) ;*.