Perhaps you should try some spelling variations:
danh lai » danh sai, gianh lai, dinh lam
hieu van » hieu va, thien van, lieu va
thi hang » thi hanh, thi nang, thi hong
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
ty hang » ly hang, ty xang, thu hang
ty sang » ty xang, duy sang, thu sang
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: te sach ((ty sang) or (((ty hang) OR (thi hang)))) xa hoi. hieu van cam duc va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty sang) OR (((ty hang) OR (thi hang)))) xa hoi. hieu van cam duc va danh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty sang) or (((ty hang) OR (thi hang)))) xa hoi. hieu van cam duc va danh lai cua tre*".