Perhaps you should try some spelling variations:
reformen beim » reformen bei, reformen im, reformen teil
david mant » david ma, david malone, david martin
qian wang » yiqian wang, qian rong, qian yan
yang zili » yang dali, yang li
david ian » david a, david n
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: qian wang ((yang iii) OR (yang zili)) reformen beim ((david ian) OR (david mant)) (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian wang ((yang iii) OR (yang zili)) reformen beim ((david ian) or (david mant)) (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: qian wang ((yang iii) OR (yang zili)) reformen beim ((david ian) or (david mant)) (hai or hari) ;*.