Perhaps you should try some spelling variations:
reformen von » formen von, reform von, referaten von
wei reformen » der reformen, den reformen, iii reformen
david hong » david ng
liang wei » xiang wei, zhang wei, wang wei
von david » john david, ben david, jan david
wan wang » yan wang, wang yang, qian wang
wen wang » wei wang, chen wang, weng fang

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