Perhaps you should try some spelling variations:
reformen im » reformen _, reformen der, reformen des
david dang » david ian, david ng
david mant » david ian, david ma, david malone
wang yang » wang yan, wang liang, wang yanling
yan wang » yuan wang, yang yang, qian wang
yang iii » klang iii, yang zili, zwang iii

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