Perhaps you should try some spelling variations:
wei reformen » der reformen, den reformen, iii reformen
von david » john david, ben david
jan david » juan david, sahn david, alan david
wan wang » wen wang, wang yang, qian wang
yan wang » yuan wang, yang yang, qian wang
wang wei » zhang wei, wang zhi
tan » than

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