Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ban hang » ngan hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
ma hoi » mai hoi, xa hoi, ma hoa
tuan » quan, tran, luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang ma hoi. hieu van cac xuc ((ban hang) or (tuan anh)) ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma hoi. hieu van cac xuc ((ban hang) OR (tuan anh)) ((vai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma hoi. hieu van cac xuc ((ban hang) or (tuan anh)) ((vai cua) or (lai cua)) tre*.