Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
lang van » dang van, tang van, hoang van
duoc ban » duc ban, quoc ban, buoc ban
cua tre » cuu tre, cua triet, dua tren
tu sach » thu sach, su sach, te sach
van lam » van nam
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay
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 ky ((lang xa) OR (lang van)) hoi. hieu van lam duoc ban thanh lai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (lang van)) hoi. hieu van lam duoc ban thanh lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((lang xa) OR (lang van)) hoi. hieu van lam duoc ban thanh lai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) OR (lang van)) hoi. hieu van lam duoc ban thanh lai ((cua tre) or (cua te))*.