Perhaps you should try some spelling variations:
die reformen » die reform, die formen, der reformen
reformen bei » reformen beim, reformen teil, reformen der
yang yang » wang yang, wang yan
david ian » david a, david n
yan wang » yuan wang, qian wang, yan liang
yang die » yang di, yang jie, klang die
david g » david a, david _, david k

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: ((yan wang) OR (yang yang)) yang die reformen bei ((david ian) OR (david g)) hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) OR (yang yang)) yang die reformen bei ((david ian) or (david g)) hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) OR (yang yang)) yang die reformen bei ((david ian) or (david g)) hai ;*.