Perhaps you should try some spelling variations:
dinh tri » dinh thi, chinh tri
hieu van » hieu va, thien van, lieu va
sach tay » xach tay, sach hay, sach tai
lang van » dang van, tang van, hoang van
sach han » sach tham, sach danh, sach nang
sach nay » sach hay, sach vay, sach nang
van hoi » van hoa, van hoc, van hoe
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc xac » xuc tac
du tre » duc tre, du tru, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach tay) or (((sach nay) or (sach han)))) lang van hoi. hieu van lam xuc xac dinh tri du tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach tay) OR (((sach nay) OR (sach han)))) lang van hoi. hieu van lam xuc xac dinh tri du tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach tay) or (((sach nay) or (sach han)))) lang van hoi. hieu van lam xuc xac dinh tri du tre*.