Perhaps you should try some spelling variations:
iii reformen » die reformen, der reformen, und reformen
iii formen » ii formen, die formen, iii form
beim david » kim david
david dang » david ian, david mant, david ng
yang yang » wang yang, wang yan
yan wang » yuan wang, qian wang, yan liang

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