Perhaps you should try some spelling variations:
during risk » using risk, during crises, during crisis
cost during » boost during, crust during, west during
zhang ying » zhang ming, zhang ping, zhang ting
zhang jing » zhang ming, zhang jin, zhang ping
end cost » end close, land cost, end iot
how shih » how six, how she

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: (zhen OR chen) ((zhang ying) OR (zhang jing)) end cost during risk how shih ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(zhen OR chen) ((zhang ying) or (zhang jing)) end cost during risk how shih ;~".
• Adding a wildcard symbol may retrieve word variants: (zhen OR chen) ((zhang ying) or (zhang jing)) end cost during risk how shih ;*.