Perhaps you should try some spelling variations:
reformen von » formen von, reform von, referaten von
iii reformen » die reformen, iii formen, der reformen
wang liang » wang yang
yan liang » yang liang, you liang, yan wang
von david » john david, ben david, jan david
young ghi » young choi, hong ghi, young get
young let » young get, young men, young er

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 OR lang) ((yan liang) OR (wang liang)) iii reformen von david ((young ghi) OR (young let)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((yan liang) OR (wang liang)) iii reformen von david ((young ghi) or (young let)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((yan liang) OR (wang liang)) iii reformen von david ((young ghi) or (young let)) ;*.