Perhaps you should try some spelling variations:
liang yang » liang ying, yang yang, huang yang
wang yang » wang yan, wang liang, wang yanling
sang minh » kang minah, anh minh, song min
minh wong » minh cong, min hong, ming kong
wong shiu » wong siu, cong shu, song shin
yun sang » yun jang, yun song, hyun song
li yun » li yue, li jun, li qun

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 yang) OR (wang yang)) li yun sang minh wong shiu ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((liang yang) or (wang yang)) li yun sang minh wong shiu ;*.