Perhaps you should try some spelling variations:
hieu tuc » hieu thuc, hieu luc, hieu thuoc
hanh vai » hanh vi, hanh va, hanh tai
tuc cham » toc cham, tu cham, phuc cham
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cham lo » cham o, cam lo, cham soc
tu sach » thu sach, te sach, tu cach
hang ca » hang va, nang cao, hang tai
ty hang » ly hang, ty xang, thi hang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ca hoi » cau hoi, cua hoi, xa hoi
lo va » lo van, lao va, ly va

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 (su sach)) ty hang ca hoi. hieu tuc cham lo va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty hang ca hoi. hieu tuc cham lo va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty hang ca hoi. hieu tuc cham lo va hanh vai cua tre*.