Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sang tao » hang tai
ban hang » ngan hang
tap cua » tap quan, tiep cua
lap cua » lai cua, lam cua, ap cua
duc ban » duc tan, duc van, dua ban
ve phan » va phan, ke phan, ve phat
sach ky » sac ky, sach y, sach ty
ve pham » vi pham, v pham, ve phat
tao hoi » tao khoi, tao boi, tay hoi
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 tao hoi. hieu ((ve pham) or (ve phan)) duc ban hang ((lap cua) or (tap cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky sang tao hoi. hieu ((ve pham) OR (ve phan)) duc ban hang ((lap cua) OR (tap cua)) te.
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang tao hoi. hieu ((ve pham) or (ve phan)) duc ban hang ((lap cua) or (tap cua)) te*.