Perhaps you should try some spelling variations:
dong hoang » hong hong
hua irene » hua ren
sang minh » kang minah, anh minh, song min
alan hua » alan h, alan a, tan hua
yang lin » yang jin, yang li, yang liang
wang lin » wang li, wang qin, wang limin
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong hoang alan hua irene ((sang minh) or (((yang lin) OR (wang lin)))) hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong hoang alan hua irene ((sang minh) OR (((yang lin) OR (wang lin)))) hong hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong hoang alan hua irene ((sang minh) or (((yang lin) OR (wang lin)))) hong hai ;*".