Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach vu » sach va, sach tu, sach uu
va danh » va dinh, va dan, dia danh
te sach » toc sach
cau luc » cau truc, cau phuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
vu nang » vuc nang, va nang, vu dang
va hanh » van hanh, va thanh, ban hanh
va cau » van cau, va cac, va dau
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach vu nang xa hoi. hieu va cau luc ((va hanh) OR (va danh)) lam ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu nang xa hoi. hieu va cau luc ((va hanh) OR (va danh)) lam ((cua te) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu nang xa hoi. hieu va cau luc ((va hanh) OR (va danh)) lam ((cua te) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach vu nang xa hoi. hieu va cau luc ((va hanh) OR (va danh)) lam ((cua te) or (cua triet))*.