Perhaps you should try some spelling variations:
doanh vai » doanh tai, doanh va, doanh van
van doanh » toan doanh, van dong, van thanh
viec cac » vien cac, viec lam, viec va
vai cuu » vai cua
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
xang xa » lang xa, mang xa, dang xay
ang xa » lang xa, mang xa, dang xay
lo van » le van, vo van, so van

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((xang xa) OR (ang xa)) hoi. hieu ((viec cac) or (viec cua)) lo van doanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((xang xa) OR (ang xa)) hoi. hieu ((viec cac) OR (viec cua)) lo van doanh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((xang xa) OR (ang xa)) hoi. hieu ((viec cac) or (viec cua)) lo van doanh vai cuu tre*".