Perhaps you should try some spelling variations:
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
wong siu » wong shiu, kong siu, wong sau
wai yan » wang yan, wei yang
dong di » dong sin
yu fang » yu gang, yu wang, yin fang
yu yang » du yang, yi yang, yu gang

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: ((wai yan) OR (dong di)) ((yan yuan) OR (yan guan)) ping ((yu fang) OR (yu yang)) wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wai yan) or (dong di)) ((yan yuan) or (yan guan)) ping ((yu fang) OR (yu yang)) wong siu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wai yan) or (dong di)) ((yan yuan) or (yan guan)) ping ((yu fang) OR (yu yang)) wong siu ;*.