Perhaps you should try some spelling variations:
reformen von » formen von, reform von, referaten von
liang wei » xiang wei, zhang wei, wang wei
von david » john david, ben david, jan david
xian wei » xiang wei, han wei, jia wei
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai
wan you » want you, warn you, can you

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