Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
ban banh » ban hanh, ban anh, ban danh
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
lam xuc » cam xuc, lam duoc
cua tre » cuu tre, cua triet, dua tren
banh vi » hanh vi, ban vi, benh vi
xuc ban » duc ban, cuc ban, quoc ban
van lam » van nam
mang xa » lang xa, mang may, dang xay
tu mang » tu manh, tu lang, tu quang
cua te » cua tu

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) OR (thu sach)) tu mang xa hoi. hieu van lam xuc ban banh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) tu mang xa hoi. hieu van lam xuc ban banh vi ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) tu mang xa hoi. hieu van lam xuc ban banh vi ((cua tre) or (cua te))*".