Perhaps you should try some spelling variations:
cost during » boost during, crust during, west during
during risk » using risk, during crises, during crisis
how safe » how safety, how space, how scale
yang du » yang di, yang d, yang jui
yang mu » yang muxi, yang jui, yang jun
how shu » how shih, how slum
how she » how some, how shih
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yanling ((yang du) or (yang mu)) cost during risk ((how shu) or (((how she) OR (how safe)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((yang du) OR (yang mu)) cost during risk ((how shu) OR (((how she) OR (how safe)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling ((yang du) or (yang mu)) cost during risk ((how shu) or (((how she) OR (how safe)))) ;".
• Adding a wildcard symbol may retrieve word variants: wang yanling ((yang du) or (yang mu)) cost during risk ((how shu) or (((how she) OR (how safe)))) ;*.