Perhaps you should try some spelling variations:
yuan kang » yuan wang, yuan chang, chan kang
quan kang » chan kang
tonga eiu » kong eiu
wing tan » wing ian, liang tan, hong tan
qian yan » qian jun, qian yi
chan eng » chan fong, chan kang, chan ming
dong di » dong sin
yan li » yang li, yuan li, gan li

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: ((wing tan) OR (dong di)) qian yan li ((((quan kang) OR (yuan kang))) OR (chan eng)) tonga eiu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing tan) or (dong di)) qian yan li ((((quan kang) OR (yuan kang))) or (chan eng)) tonga eiu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing tan) or (dong di)) qian yan li ((((quan kang) OR (yuan kang))) or (chan eng)) tonga eiu ;*.