Perhaps you should try some spelling variations:
referaten von » referat von, referat vom, reformen von
david young » david loundy
liang iii » klang iii, liang li, liang wei
xiang wei » liang wei, zhang wei, wang wei
von david » john david, ben david, jan david
young ghi » young choi, hong ghi, young get
wang » wing, wan, lang

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: wang yan ((liang iii) OR (xiang wei)) referaten von david young ghi ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan ((liang iii) or (xiang wei)) referaten von david young ghi ;*.