Perhaps you should try some spelling variations:
thien van » thi van
hoc sach » hoc sinh, hoc cac, hoc anh
dang xay » dang van, van xay
danh lai » danh sai, gianh lai, dinh lam
hieu van » hieu va, lieu va, hieu ve
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, lang van
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
lai cua » dai cua, hai cua, lai chau
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: hoc sach ty ((lang xa) or (dang xay)) hoi. ((hieu van) OR (thien van)) cam duc va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty ((lang xa) OR (dang xay)) hoi. ((hieu van) OR (thien van)) cam duc va danh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty ((lang xa) or (dang xay)) hoi. ((hieu van) OR (thien van)) cam duc va danh lai cua tre*".