Perhaps you should try some spelling variations:
wei reformen » der reformen, den reformen, iii reformen
reformen von » formen von, reform von, referaten von
zhang wei » zhen wei
von david » john david, ben david, jan david
hong hai » shang hai, zhong tai, dang hai
win you » when you
ng hai » dang hai

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: ((win you) OR (can you)) zhang wei reformen von david ((ng hai) OR (hong hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((win you) or (can you)) zhang wei reformen von david ((ng hai) OR (hong hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((win you) or (can you)) zhang wei reformen von david ((ng hai) OR (hong hai)) ;*.