Perhaps you should try some spelling variations:
reformen beim » reformen bei, reformen im, reformen teil
zili reformen » iii reformen, die reformen
david dang » david mant, david ng
qian wang » yiqian wang, qian rong, qian yan
yang zili » yang dali, yang li
david ian » david a, david n
yan wang » yuan wang, yang yang, 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 (qian wang)) yang zili 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) OR (qian wang)) yang zili reformen beim ((david dang) or (david ian)) (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) OR (qian wang)) yang zili reformen beim ((david dang) or (david ian)) (hai or hadi) ;*.