Perhaps you should try some spelling variations:
sang tao » hang tai
thu sach » thuat sach, thuoc sach, thu hoach
cham duc » pham duc, cham soc, pham duy
tu sach » su sach, te sach, tu cach
vu cham » va cham, vu kham, tu cham
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
hieu vu » hieu va, hieu ve, hieu su
tao hoi » tao khoi, tao boi, tay hoi
ty sang » ty xang, ty hang, duy sang
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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) OR (thu sach)) ty sang tao hoi. hieu vu cham duc ((va hanh) or (va dan)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty sang tao hoi. hieu vu cham duc ((va hanh) OR (va dan)) lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty sang tao hoi. hieu vu cham duc ((va hanh) or (va dan)) lai cua tre*".