Perhaps you should try some spelling variations:
reformen beim » reformen bei, reformen im, reformen teil
david dang » david mant, david ng
klang die » klang der, klang iii, klaue die
david ian » david a, david n
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) OR (klang die)) reformen beim ((david dang) OR (david ian)) (hai OR hadi) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yan wang ((yang iii) or (klang die)) reformen beim ((david dang) OR (david ian)) (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: yan wang ((yang iii) or (klang die)) reformen beim ((david dang) OR (david ian)) (hai or hadi) ;*.