Perhaps you should try some spelling variations:
boost during » roosts during, books during, built during
boom during » blooms during, books during, bim during
yang lands » lying lands, range lands, yang anda
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
how scale » how stable, how small, how space
how safe » how safety, how space, how state

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 yang lands ((boost during) OR (boom during)) risk ((how safe) or (how scale)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang lands ((boost during) OR (boom during)) risk ((how safe) OR (how scale)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang lands ((boost during) OR (boom during)) risk ((how safe) or (how scale)) ;*".