Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
land cost » land costs, land code
end cost » end close, end iot
among hr » among hard, among ers, among hiv
among eu » among men, among _, among 15

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 liang yang ((end cost) OR (land cost)) during risk ((among hr) OR (among eu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang ((end cost) OR (land cost)) during risk ((among hr) or (among eu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang yang ((end cost) OR (land cost)) during risk ((among hr) or (among eu)) ;*.