Perhaps you should try some spelling variations:
wang xuan » wang xiuyan, wang xueman, wang yuhan
hua irene » hua ren
sang minh » kang minah, anh minh, song ming
wong shiu » wong siu, cong shu, song shin
wang ban » wang yan, wang dan, wang yang
alan hua » alan h, alan a, tan hua
song min » song ming, gong min, jong min

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 ban) OR (wang xuan)) alan hua irene ((sang minh) OR (song min)) wong shiu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang ban) or (wang xuan)) alan hua irene ((sang minh) OR (song min)) wong shiu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang ban) or (wang xuan)) alan hua irene ((sang minh) OR (song min)) wong shiu ;*.