Perhaps you should try some spelling variations:
wang dan » wang yan, wang ban, wang yidan
gang yan » wang yan, gang yao, wang yang
yi chang » ii chang, ying chang, jin chang
dan yan » dan yang, nan yan, wang yan
yi gang » ii gang, i gang, li gang
yi dang » yi yang
yan yi » yang yi, tan yi, yan zi

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 yan yi gang yan ((yi dang) or (yi chang)) (hai or hadi) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dan yan yi gang yan ((yi dang) OR (yi chang)) (hai OR hadi) ;*.