Perhaps you should try some spelling variations:
ban hanh » ban hang
sach ky » sach y, sach ty, sach kem
nang ma » tang ma, sang ma, mang may
lam xuc » cam xuc, lam duoc
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va lam » van lam, va lap
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) OR (sac ky)) ((nang ma) or (nang cao)) hoi. lieu va lam xuc ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) ((nang ma) OR (nang cao)) hoi. lieu va lam xuc ban hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) ((nang ma) or (nang cao)) hoi. lieu va lam xuc ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) ((nang ma) or (nang cao)) hoi. lieu va lam xuc ban hanh vi cua tre*.