Perhaps you should try some spelling variations:
viec bach » viec ban, viec bao, viet sach
ban thanh » ban hanh, ban hang
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va cuu » va chu, va huu
va cau » van cau, va cac, va dau

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 bach) or (vien bach)) xuc ban thanh ((va cuu) OR (va cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((viec bach) OR (vien bach)) xuc ban thanh ((va cuu) OR (va cau)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((viec bach) or (vien bach)) xuc ban thanh ((va cuu) OR (va cau)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((viec bach) or (vien bach)) xuc ban thanh ((va cuu) OR (va cau)) tre*.