Perhaps you should try some spelling variations:
wang dan » wang yan, wang ban, wang yidan
dan gang » dan yang, den gang, deng gang
gang zum » zugang zum, zwang zum, drang zum
zum gang » zum umgang
gang yan » wang yan, gang yao, wang yang
yi chang » ii chang, ying chang, jin chang
yi gang » ii gang, i gang, li gang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang dan gang zum gang yan ((yi gang) or (yi chang)) (hai or hadi) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dan gang zum gang yan ((yi gang) OR (yi chang)) (hai OR hadi) ;*.