Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
land costs » wind costs, aid costs
yan liang » yang liang, wang liang, you liang
land cost » land code, end cost
how small » how smart
wing yan » wang yan, wing ian, wing tan
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: wing yan liang ((land costs) OR (land cost)) during risk ((how she) OR (how small)) ;~.
• Adding a wildcard symbol may retrieve word variants: wing yan liang ((land costs) or (land cost)) during risk ((how she) or (how small)) ;*.