Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hanh dai » hanh tai, hanh dao, vanh dai
va triet » va thiet, va trien, ve triet
tu sach » thu sach, te sach, tu cach
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
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
dai va » mai 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 hanh dai va triet~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang xa hoi. hieu vu cham luc va hanh dai va triet*.