Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ty ang » ty xang, ty hang, ty anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty ang) or (thi hang)) xa hoi. hieu van cham duc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty ang) OR (thi hang)) xa hoi. hieu van cham duc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty ang) or (thi hang)) xa hoi. hieu van cham duc va hanh lai cua tre*.