Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
housing costs » housing census
jie debate » die debatte, wide debate, aid debate
how space » how race
yan yang » yang yang, yao yang, tan yang
dan yang » daun yang, tan yang, wang yang
wang » wing, wan, lang

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