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

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