Perhaps you should try some spelling variations:
liang using » liang ying, yang using, change using
during risk » using risk, during crises, during crisis
wang liang » wang yang
using eu » using e, using ed, using es
using rs » using r, using risk, using _
how shih » how six, how she
eu cost » au costa, der cost, end cost

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 liang using eu cost ((during risk) OR (using rs)) how shih ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang using eu cost ((during risk) or (using rs)) how shih ;*.