Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dang xay » dang van, van xay
hang vi » hang va, hanh vi, hang di
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang ha » long ha
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 ha) or (dang xay)) hoi. hieu van nam ((xuc ban) OR (duc ban)) hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang ha) OR (dang xay)) hoi. hieu van nam ((xuc ban) OR (duc ban)) hang vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang ha) or (dang xay)) hoi. hieu van nam ((xuc ban) OR (duc ban)) hang vi cua tre*".