Perhaps you should try some spelling variations:
wei reformen » der reformen, den reformen, iii reformen
reformen von » formen von, reform von, referaten von
yan zhang » yuan chang, bin zhang, han chang
zhang wei » zhen wei
von david » john david, ben david, jan david
zhong tai » hong tan, hong hai, zhong zhi
hong ghi » zhong zhi, hong g, hong hai
wan yan » wang yan, nan yan, wai yan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan zhang wei reformen von david ((zhong tai) OR (hong ghi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan zhang wei reformen von david ((zhong tai) OR (hong ghi)) ;*".