Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau theo » cau thi, cau tao
van danh » van doanh, van anh, van hanh
cau treo » cau tren, cau triet, cau trieu
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac lo » cac lop, cac bo, cac ho
cac co » cac cong

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 ky nang xa hoi. hieu viec ((cac lo) OR (cac co)) van danh vai ((cau treo) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu viec ((cac lo) OR (cac co)) van danh vai ((cau treo) OR (cau theo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu viec ((cac lo) OR (cac co)) van danh vai ((cau treo) or (cau theo))*".