Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
bac dan » bach dan, cac dan, ban dan
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
nang xa » nang x, lang xa, mang xa
tu bac » tu ban, tu cac, tu bat
vi su » va su, ve su, ki su

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: tu bac dan ((nang xa) OR (nang ma)) hoi. hieu van cac xuc ((ban hanh) OR (ban hang)) vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu bac dan ((nang xa) or (nang ma)) hoi. hieu van cac xuc ((ban hanh) OR (ban hang)) vi su triet~".
• Adding a wildcard symbol may retrieve word variants: tu bac dan ((nang xa) or (nang ma)) hoi. hieu van cac xuc ((ban hanh) OR (ban hang)) vi su triet*.