Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
va triet » va thiet, va trien, ve triet
nang doc » nang luc
lang van » dang van, tang van, hoang van
nang doi » nang noi, hang doi, nang dong
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
cac tuc » cac toc, cac tac, cac nuoc
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
cac tu » cac thu, cach tu, cac du

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 lang van hoi. hieu vien ((cac tuc) OR (cac tu)) xa ((nang doi) or (nang doc)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang van hoi. hieu vien ((cac tuc) OR (cac tu)) xa ((nang doi) OR (nang doc)) va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang van hoi. hieu vien ((cac tuc) OR (cac tu)) xa ((nang doi) or (nang doc)) va triet*".