Perhaps you should try some spelling variations:
during crisis » during crises, housing crisis
books during » blooms during, banks during, boom during
wang yang » wang yan, wang liang, wang yanling
ying jun » yang jun, pang jun, wang jun
yang jui » yang judy, yang di, yang xi
ying jin » yang jin, jing ji, yang jie
how some » how women

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

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