Perhaps you should try some spelling variations:
wei reformen » der reformen, den reformen, iii reformen
reformen von » formen von, reform von, referaten von
von david » john david, ben david, jan david
you xian » you liang, you can, you mean
xian wei » xiang wei, liang wei, han wei
wan you » want you, warn you, can you
hong g » hong ng, hong w, hong a
hong 7 » hong w, hong a
hai » hadi, haji, hari

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 you xian wei reformen von david ((((hong g) OR (hong 7))) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan you xian wei reformen von david ((((hong g) or (hong 7))) or (dang hai)) ;*.