Perhaps you should try some spelling variations:
cost during » boost during, crust during, west during
crises how » crisis how
chen hao » cheng han
using eu » using e, using ed, using es
ying hua » ming hua, wang hua, ying zhu
ying eu » ying zhu
how shu » how she, how shih, how slum

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: chen hao ((((ying eu) OR (using eu))) OR (ying hua)) cost during crises how shu ;~.
• Adding a wildcard symbol may retrieve word variants: chen hao ((((ying eu) or (using eu))) or (ying hua)) cost during crises how shu ;*.