Perhaps you should try some spelling variations:
quan guan » gan guan, quan guo, yan guan
quan kang » chan kang
yuan kang » yuan wang, yuan chang, chan kang
wong shiu » wong siu, cong shu, song shin
yan yuan » yan guan, fang yuan, yan clan
nan yan » nan ya, wang yan, qian yan
dong di » dong sin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((nan yan) OR (dong di)) ((yan yuan) OR (quan guan)) li ((quan kang) OR (yuan kang)) wong shiu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nan yan) or (dong di)) ((yan yuan) or (quan guan)) li ((quan kang) OR (yuan kang)) wong shiu ;~".
• Adding a wildcard symbol may retrieve word variants: ((nan yan) or (dong di)) ((yan yuan) or (quan guan)) li ((quan kang) OR (yuan kang)) wong shiu ;*.