Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
thu ban » thu hang
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ban ma » ban va
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: ((toc sach) or (thuat sach)) thu ban ma hoi. hieu qua cac duc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuat sach)) thu ban ma hoi. hieu qua cac duc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuat sach)) thu ban ma hoi. hieu qua cac duc va hanh lai cua tre*.