Perhaps you should try some spelling variations:
xuan thang » yuan chang, xiulan zhang
thang han » zhang han, thang pham, cheng han
yan xuan » yan guan, yan yuan, wang xuan
yang jie » yang jin, yang jui, yang jun
wong sau » wong sam, wong siu, wong shiu
yang xi » yang jui
yang yi » yang jui
wang » wing, wan, lang

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: wang yan xuan thang han ((((((yang xi) OR (yang yi))) OR (yang di))) OR (yang jie)) wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan xuan thang han ((((((yang xi) or (yang yi))) or (yang di))) or (yang jie)) wong sau ;*.