Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cham lo » cham o, cham soc, cham hoi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y tang » ky tang, 6 tang, 5 tang
cam lo » nam lo, cam ly, cam o
7 tang » 6 tang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y tang) OR (7 tang)) ma hoi. hieu ve ((cham lo) or (cam lo)) va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y tang) OR (7 tang)) ma hoi. hieu ve ((cham lo) OR (cam lo)) va hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y tang) OR (7 tang)) ma hoi. hieu ve ((cham lo) or (cam lo)) va hanh lai cua tre*".