Perhaps you should try some spelling variations:
sang tao » hang tai
cham duc » pham duc, cham soc, pham duy
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach tu, sach thu, xach tay
tao hoi » tao khoi, tao boi, tay hoi
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

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 ty) or (sach y)) sang tao hoi. hieu ve cham duc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) sang tao hoi. hieu ve cham duc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) sang tao hoi. hieu ve cham duc va hanh lai cua tre*.