Perhaps you should try some spelling variations:
wald yang » wang yang
von wald » von wall, von oswald, von wales
yang tin » yang jin, yang lin, yang jing
gong min » jong min, song min, gong meng
yan han » man han, yan zhang, kang han
man can » man han, woman can, man kann
hong ma » hong a, hong hai, wong max
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan han) or (man can)) von wald yang tin ((((hong ma) or (hong tan))) or (gong min)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan han) OR (man can)) von wald yang tin ((((hong ma) OR (hong tan))) OR (gong min)) ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yan han) or (man can)) von wald yang tin ((((hong ma) or (hong tan))) or (gong min)) ;*.