Perhaps you should try some spelling variations:
during risk » using risk, during crisis, reducing risk
land costs » wind costs, aid costs
wang yang » wang yan, wang liang, wang yanling
yang jing » wang jing, yang jin, huang jing
land cost » land code, end cost
along shu » along nhue, cong shu, along who

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 yang jing ((land costs) OR (land cost)) ((during risk) OR (during crises)) along shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang jing ((land costs) or (land cost)) ((during risk) OR (during crises)) along shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang jing ((land costs) or (land cost)) ((during risk) OR (during crises)) along shu ;*.