Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
zhang zhang » zhen zhang, cheng zhang, zhang fang
wang zhang » wang zheng, wang luhang, wang liang
un debat » un debate, le debat, du debat
le debut » le debat, au debut
how she » how some, how safe, how shih

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 zhang) OR (zhang zhang)) ming ((un debat) OR (le debut)) during crisis how she ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang zhang) OR (zhang zhang)) ming ((un debat) or (le debut)) during crisis how she ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang zhang) OR (zhang zhang)) ming ((un debat) or (le debut)) during crisis how she ;*.