Perhaps you should try some spelling variations:
wang yidan » wang yan
kang minh » kang minah, sang minh, anh minh
wong shiu » wong siu, song shin, wong sau
wang dan » wang yan, wang ban, wang yang
yang li » yang lin, yang di, yang yi
yang xi » yang di, yang yi, yang jui
xi kang » jin kang, xi zhang

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) or (wang yidan)) ((yang li) OR (yang xi)) xi kang minh ((wong shiu) or (cong shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang dan) OR (wang yidan)) ((yang li) OR (yang xi)) xi kang minh ((wong shiu) OR (cong shu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang dan) or (wang yidan)) ((yang li) OR (yang xi)) xi kang minh ((wong shiu) or (cong shu)) ;*".