Perhaps you should try some spelling variations:
khan sher » khan syed, than she
chang won » chang soon, chang ann, chang min
yang dan » yang dean, yang fan, royang dan
wang dan » wang yan, wang ban, wang yidan
han shen » can she, han en, han men
won wong » hon kwong, john wong, kwok wong
wong yue » wang yue, hong yu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang dan) or (wang dan)) ((han shen) OR (khan sher)) chang won wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang dan) OR (wang dan)) ((han shen) OR (khan sher)) chang won wong yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang dan) or (wang dan)) ((han shen) OR (khan sher)) chang won wong yue ;*".