Perhaps you should try some spelling variations:
va triet » va trien, ve triet, cua triet
hang di » hang doi, hang dien, hang dich
hang vi » hang va, hanh vi, khang voi
so sach » so sanh, bo sach, co sach
toc van » hoc van, toc san, tac van
cac toc » cac toi, cac nuoc, cac thoi
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu ve cac toc van ((hang di) or (hang vi)) ((va triet) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ve cac toc van ((hang di) OR (hang vi)) ((va triet) OR (va thiet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. hieu ve cac toc van ((hang di) or (hang vi)) ((va triet) OR (va thiet))*".