Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cham luc » cham soc, nhan luc, cham cuu
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
te sach » toc sach
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, tu cach, vu sach
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
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 (te sach))) OR (su sach)) y nang xa hoi. hieu vu cham luc va hanh vai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (te sach))) or (su sach)) y nang xa hoi. hieu vu cham luc va hanh vai va triet~".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (te sach))) or (su sach)) y nang xa hoi. hieu vu cham luc va hanh vai va triet*.