Perhaps you should try some spelling variations:
reformen beim » reformen bei, reformen im, reformen teil
beim david » kim david
david dang » david ian, david mant, david ng
qian wang » yiqian wang, qian rong, qian yan
yang zili » yang dali, yang li
yan wang » yuan wang, yang yang, yan liang
yang iii » klang iii, zwang iii, yang di

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