Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cuu ban » cuu van, cua ban, cuu san
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. ((hieu van) or (hieu va)) cam ((xuc ban) or (cuu ban)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. ((hieu van) OR (hieu va)) cam ((xuc ban) OR (cuu ban)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. ((hieu van) or (hieu va)) cam ((xuc ban) or (cuu ban)) hanh vi cua tre*.