Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cham luc » cham soc, nhan luc, cham cuu
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
tu sach » thu sach, te sach, tu cach
y nang » ky nang, ly nang, v nang
vai va » mai va, dai va, hai va

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) OR (su sach)) y nang xa hoi. hieu vu cham luc ((va danh) OR (va hanh)) vai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) y nang xa hoi. hieu vu cham luc ((va danh) OR (va hanh)) vai va triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang xa hoi. hieu vu cham luc ((va danh) OR (va hanh)) vai va triet*.