Perhaps you should try some spelling variations:
done hoang » dong hoang
hua irene » hua ren
sang minh » kang minah, anh minh, song min
yala hua » ya hua
yang lin » yang jin, yang li, yang liang
wang lin » wang li, wang qin, wang limin
hong shu » cong shu, tong shui, wong shiu

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: done hoang yala hua irene ((sang minh) OR (((yang lin) OR (wang lin)))) hong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "done hoang yala hua irene ((sang minh) or (((yang lin) OR (wang lin)))) hong shu ;~".
• Adding a wildcard symbol may retrieve word variants: done hoang yala hua irene ((sang minh) or (((yang lin) OR (wang lin)))) hong shu ;*.