Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
vanh dai » van dai, vanh tai, lanh dao
sach kem » hanh kem
va vanh » va van, va danh, va hanh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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 hay) or (sach kem))) or (sac ky)) lang xa hoi. hieu va cam xuc va vanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach hay) OR (sach kem))) OR (sac ky)) lang xa hoi. hieu va cam xuc va vanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach hay) or (sach kem))) or (sac ky)) lang xa hoi. hieu va cam xuc va vanh dai cua tre*.