Perhaps you should try some spelling variations:
sach kem » hanh kem
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
dao duc » giao duc, tao duoc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach hay
sac ky » cac ky, sai ky
va dao » ca dao
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 (sach kem))) or (sac ky)) lang xa hoi. hieu va dao duc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ky) OR (sach kem))) OR (sac ky)) lang xa hoi. hieu va dao duc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) or (sach kem))) or (sac ky)) lang xa hoi. hieu va dao duc va hanh vi cua tre*.