Perhaps you should try some spelling variations:
reformen teil » reformen bei, reformen beim, reformen der
den reformen » der reformen, von reformen, die reformen
teil david » weil david, fell david
zhang den » zhang fan, zhang wei, zhang yan
wan yan » nan yan, wai yan, wang yang
qian yi » qian yan
david n » david a, david _, david k

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: ((((wan yan) OR (wang yan))) OR (qian yi)) zhang den reformen teil david n w ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wan yan) or (wang yan))) or (qian yi)) zhang den reformen teil david n w ;*.