Perhaps you should try some spelling variations:
iii reformen » die reformen, iii formen, der reformen
reformen der » formen der, reform der
yang yang » wang yang, wang yan
you liang » you xian, you liangzhi
der david » de david, dyker david, dror david
david ng » david g, david n, david a
ng g » g g, n g, ng _

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: wan ((yang yang) OR (you liang)) iii reformen der david ng g ;~.
• Adding a wildcard symbol may retrieve word variants: wan ((yang yang) or (you liang)) iii reformen der david ng g ;*.