Perhaps you should try some spelling variations:
wang liang » wang yang
sang minh » kang minah, anh minh, song min
minh wong » minh cong, min hong, ming kong
wong shiu » wong siu, cong shu, song shin
day sang » day santa, day long, du sang
yang yi » yang di, yang xi, yang jui
yi day » yi dai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang hyoung) or (wang liang)) yang yi day sang minh wong shiu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang hyoung) OR (wang liang)) yang yi day sang minh wong shiu ;*.