Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh ve » hanh vi, hanh va, hanh kem
duc ban » duc tan, duc van, dua ban
luc ban » cuc ban, luc bat, luc van
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cac » va cac, vien cac
ve ve » de ve, va ve, ke ve

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 ty) or (sach y)) lang xa hoi. hieu ve cac ((luc ban) or (duc ban)) hanh ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) lang xa hoi. hieu ve cac ((luc ban) OR (duc ban)) hanh ve ve triet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) lang xa hoi. hieu ve cac ((luc ban) or (duc ban)) hanh ve ve triet*.