Perhaps you should try some spelling variations:
ban thanh » ban hang
toc sach » hoc sach, doc sach, thuoc sach
sang tay » sang tao, sang tai, sang tac
ban hanh » ban hang
tap cua » tap quan, tiep cua
lap cua » lai cua, lam cua, ap cua
sach ky » sac ky, sach y, sach ty
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
tay hoi » tay ho, tao hoi, tay thai
ky sang » ky nang, ky dang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky sang tay hoi. hieu ve pham duc ((ban thanh) or (ban hanh)) ((lap cua) or (tap cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky sang tay hoi. hieu ve pham duc ((ban thanh) OR (ban hanh)) ((lap cua) OR (tap cua)) te.
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang tay hoi. hieu ve pham duc ((ban thanh) or (ban hanh)) ((lap cua) or (tap cua)) te*.