Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
cham duc » pham duc, cham soc, pham duy
hanh lai » hanh lam, hanh tai, thanh lap
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
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 thu) OR (sach thue)) sang ma hoi. hieu ve cham duc va hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) sang ma hoi. hieu ve cham duc va hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) sang ma hoi. hieu ve cham duc va hanh lai cua tre*.