Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
hanh tai » hang tai, han tai, hinh tai
sach ty » sach tu, sach thu, xach tay
cac tuc » cac toc, cac tu, cac tac
cuc tre » duc tre, cua tre, cuu tre
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: co ((sach ty) or (sach y)) hang va hoi. hieu viec cac tuc xa ((hanh tai) OR (thanh tai)) cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co ((sach ty) OR (sach y)) hang va hoi. hieu viec cac tuc xa ((hanh tai) OR (thanh tai)) cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co ((sach ty) or (sach y)) hang va hoi. hieu viec cac tuc xa ((hanh tai) OR (thanh tai)) cuc tre".
• Adding a wildcard symbol may retrieve word variants: co ((sach ty) or (sach y)) hang va hoi. hieu viec cac tuc xa ((hanh tai) OR (thanh tai)) cuc tre*.