Perhaps you should try some spelling variations:
lying lands » sloping lands
cost during » boost during, crust during, west during
during risk » using risk, during crises, during crisis
yang lying » yang yang, yang jing, yang liang
lands cost » land cost, lands west, land costs
wang yang » wang yan, wang liang, wang yanling
how scale » how stable, how small, new scale
how space » how race
how safe » how safety, how state, how some

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 lying lands cost during risk ((how safe) OR (((how scale) OR (how space)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang lying lands cost during risk ((how safe) or (((how scale) OR (how space)))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang lying lands cost during risk ((how safe) or (((how scale) OR (how space)))) ;*.