Perhaps you should try some spelling variations:
hieu vien » hieu hien, thieu nien, hieu tieng
hieu viec » nhieu viec, hieu ve, sieu viet
va triet » va thiet, va trien, ve triet
van danh » van doanh, van anh, van hanh
nang xa » nang x, lang xa, nang ma
danh va » doanh va, hanh va, anh va
tu sach » thu sach, su sach, te sach
sach v » sach va, sach y, sach 2
he van » le van, ho van, ha van
v nang » va nang, vu nang, van nang
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: tu sach v nang xa hoi. ((hieu vien) OR (hieu viec)) cac he van danh va ((cua te) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. ((hieu vien) OR (hieu viec)) cac he van danh va ((cua te) or (va triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. ((hieu vien) OR (hieu viec)) cac he van danh va ((cua te) or (va triet))*.