Perhaps you should try some spelling variations:
reformen bei » reformen beim, reformen teil, reformen der
wei reformen » der reformen, den reformen, iii reformen
zhang wei » zhen wei
qian yi » qian yan
david n » david a, david _, david g
david k » david a, david _
wang » wing, wan, lang

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: ((wang yan) OR (qian yi)) zhang wei reformen bei ((david n) OR (david k)) w ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yan) or (qian yi)) zhang wei reformen bei ((david n) OR (david k)) w ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (qian yi)) zhang wei reformen bei ((david n) OR (david k)) w ;*.