Perhaps you should try some spelling variations:
danh lai » danh sai, gianh lai, dinh lam
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
cao duc » dao duc, cao suc, giao duc
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
cam duc » cam xuc, pham duc, nam duoc
sach ty » sach y, sach tu, xach tay
sang xa » song xa, lang xa, sang ma
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) or (sach thu)) sang xa hoi. hieu van ((cam duc) OR (cao duc)) va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) sang xa hoi. hieu van ((cam duc) OR (cao duc)) va danh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) sang xa hoi. hieu van ((cam duc) OR (cao duc)) va danh lai cua tre*".