Perhaps you should try some spelling variations:
liang xiuyan » liang xiaoyan, wang xiuyan, wang xinyan
xiuyan thuy » xuan thuy
wang liang » wang yang
thuy chen » hua chen, zhu chen
chen kong » chen rong, chen yong, chen dung
kong john » king john, wong john, longo john
wong sam » wong sau, wong lai, wong max
von sam » von sa, von sap, von scham
sar » sara, star, saur

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 liang xiuyan thuy chen kong john ((((wong sam) OR (von sam))) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang xiuyan thuy chen kong john ((((wong sam) or (von sam))) or (kong sar)) ;*.