Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
xang van » dang van, tang van, lang van
tinh dai » trinh dai, tinh da, tinh hai
viec cac » vien cac, viec cua, viec lam
sach thu » sach thue, sach thieu, sach tham
van hoi » van hoa, van hoc, van hoe
sach ty » sach y, sach tu, xach tay
toc may » toc tay, toc giay, truc may
hoc may » hoc ma
cua tu » cua tuc, cua su, cua cu

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 ty) or (sach thu)) xang van hoi. hieu viec cac ((toc may) OR (hoc may)) tinh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach thu)) xang van hoi. hieu viec cac ((toc may) OR (hoc may)) tinh dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) or (sach thu)) xang van hoi. hieu viec cac ((toc may) OR (hoc may)) tinh dai cua tu".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach thu)) xang van hoi. hieu viec cac ((toc may) OR (hoc may)) tinh dai cua tu*.