Perhaps you should try some spelling variations:
hieu vien » hieu hien, thieu nien, hieu tieng
hieu viec » nhieu viec, sieu viet, hieu hien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dich vi » dich vu, dich va, dinh vi
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van
vi cua » vai cua, di cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. ((hieu vien) OR (((hieu viec) OR (hieu ve)))) cac lo van dich vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((hieu vien) or (((hieu viec) OR (hieu ve)))) cac lo van dich vi cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((hieu vien) or (((hieu viec) OR (hieu ve)))) cac lo van dich vi cua te*.