Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
van doanh » toan doanh, van dong, van thanh
viec cac » vien cac, viec cua, viec lam
van danh » van anh, van hanh, van manh
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
cac lo » cac lop, cac co, cac bo
x hoi » xa hoi, o hoi, x ho

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 ly nang x hoi. hieu viec cac lo ((van danh) OR (van doanh)) sai ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang x hoi. hieu viec cac lo ((van danh) OR (van doanh)) sai ((cuu tre) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang x hoi. hieu viec cac lo ((van danh) OR (van doanh)) sai ((cuu tre) or (cua tre))*".