Perhaps you should try some spelling variations:
der rhein » des rheins
wang tan » wang yan, wang ban, wang dan
tan kong » tan hong
der rein » der verein, der reinen, der reise
wong sau » wong sam, wong siu, wong shiu
wong yue » wang yue, hong yu
wang li » wang lei, wang lin, tang li

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 tan kong ((der rein) OR (der rhein)) wang li ((wong sau) OR (wong yue)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang tan kong ((der rein) OR (der rhein)) wang li ((wong sau) or (wong yue)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang tan kong ((der rein) OR (der rhein)) wang li ((wong sau) or (wong yue)) ;*.