Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, thuc van
cuc ban » cua ban, cac ban, cuu ban
xuc ban » duc ban, quoc ban, xuat ban
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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

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