Perhaps you should try some spelling variations:
redner using » better using, reduce using, router using
using learn » using lean, using learning, using linear
how slower » has slower, how slow
wang yong » wang yang, wang hyoung, wang yan
phang der » anhang der, klang der, zwang der
low lower » low power, low tower, new lower

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 yong ((phang der) OR (gang der)) redner using learn ((how slower) OR (low lower)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong ((phang der) or (gang der)) redner using learn ((how slower) OR (low lower)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong ((phang der) or (gang der)) redner using learn ((how slower) OR (low lower)) ;*.