Perhaps you should try some spelling variations:
sach ky » sach ty, sach kem, sach hay
ban anh » ban hanh, ban banh, ban danh
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
ma hoi » mai hoi, xa hoi, ma hoa

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) OR (sach y))) or (sac ky)) nang ma hoi. lieu va cam duc ban anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ky) OR (sach y))) OR (sac ky)) nang ma hoi. lieu va cam duc ban anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ky) OR (sach y))) or (sac ky)) nang ma hoi. lieu va cam duc ban anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) OR (sach y))) or (sac ky)) nang ma hoi. lieu va cam duc ban anh vi cua tre*.