Perhaps you should try some spelling variations:
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien
ve triet » va trien
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu tu » chieu tu, hieu tuc, hien tu
tu nhan » tue nhan, cu nhan, tu ngan
luc van » luoc van, luu van, duc van
hanh ve » hanh vi, hanh va, hanh kem
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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: su sach y nang ma hoi. hieu tu nhan luc van hanh ve ((su triet) OR (ve triet))~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu tu nhan luc van hanh ve ((su triet) or (ve triet))*.