Perhaps you should try some spelling variations:
thien van » thi van
hanh lai » hanh lam, hanh tai, thanh lap
thuc van » thuc vat, thuc dan, thuc va
van hac » van hoc, van ha, van hai
lai cua » dai cua, hai cua, lai chau
vuc van » duc van, luc van, chuc van
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu hang » thu hang, tu hanh, tu hung
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi

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 tu hang ((ma hoi) or (xa hoi)). thien van hac ((vuc van) OR (thuc van)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu hang ((ma hoi) OR (xa hoi)). thien van hac ((vuc van) OR (thuc van)) hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu hang ((ma hoi) or (xa hoi)). thien van hac ((vuc van) OR (thuc van)) hanh lai cua tre*".