Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu lang » thu hang, thu bang, phu lang
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
duc van » duc va, duc tan, duc manh
duc ban » duc tan, dua ban, duc man
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
va lam » van lam, va lap
anh vi » hanh vi, anh va, anh ve
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu lang xa hoi. hieu va lam ((duc ban) OR (duc van)) anh vi ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu lang xa hoi. hieu va lam ((duc ban) OR (duc van)) anh vi ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu sach thu lang xa hoi. hieu va lam ((duc ban) OR (duc van)) anh vi ((cua tre) or (cua te))*.