Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
cua tre » cuu tre, cua triet, dua tren
dua ban » dia ban, cua ban, qua ban
lam dua » lam cua, lam duoc, lam dung
van lam » van nam
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
lang xa » lang ha, dang xay, lang van
vang xa » mang xa, ang xa, 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 ly ((vang xa) or (lang xa)) hoi. hieu van lam dua ban hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((vang xa) OR (lang xa)) hoi. hieu van lam dua ban hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((vang xa) or (lang xa)) hoi. hieu van lam dua ban hanh vi ((cua tre) or (cua te))*.