Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
crisis among » crisis sannong, crisis adding, crisis around
zhang zhang » zhen zhang, cheng zhang, zhang fang
wang liang » wang yang
among shu » cong shu, among eu, among sex
der cost » oder cost, user cost, debt cost
eu cost » au costa, end cost, eu court

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) OR (zhang zhang)) ying ((eu cost) OR (der cost)) during crisis among shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang liang) OR (zhang zhang)) ying ((eu cost) OR (der cost)) during crisis among shu ;*.