Perhaps you should try some spelling variations:
nhan luc » nang luc
su triet » su tien, ve triet
hanh ve » hanh va, hanh kem
sach ly » sach y, sach lo, sach ty
su sach » so sach, vu sach
luc van » luoc van, luu van, duc van
vu nhan » cu nhan, vu ngan, tu nhan
hieu vu » hieu va, hieu ve, hieu su
su viet » so viet
ma hoi » mai hoi, xa hoi, ma hoa
san ma » sang ma, ban ma, san va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly san ma hoi. hieu vu nhan luc van ((hanh ve) OR (hanh vi)) ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly san ma hoi. hieu vu nhan luc van ((hanh ve) OR (hanh vi)) ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly san ma hoi. hieu vu nhan luc van ((hanh ve) OR (hanh vi)) ((su triet) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: su sach ly san ma hoi. hieu vu nhan luc van ((hanh ve) OR (hanh vi)) ((su triet) or (su viet))*.