Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nhan luc » nang luc
hieu ca » hieu cac, hieu cua, hieu va
hanh ve » hanh vi, hanh va
luc van » luoc van, luu van, duc van
su sach » so sach, vu sach
sach uu » sach luu, sach tu, sach xu
hieu cu » hieu cua, hieu su, nhieu cau
nang ma » tang ma, sang ma, nang cao
uu nang » cuu nang, vu nang, cuu nong
ma hoi » mai hoi, xa hoi, ma hoa
kem » kiem

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 uu nang ma hoi. ((hieu cu) or (hieu ca)) nhan luc van ((hanh ve) OR (hanh kem)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach uu nang ma hoi. ((hieu cu) OR (hieu ca)) nhan luc van ((hanh ve) OR (hanh kem)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach uu nang ma hoi. ((hieu cu) or (hieu ca)) nhan luc van ((hanh ve) OR (hanh kem)) su triet".
• Adding a wildcard symbol may retrieve word variants: su sach uu nang ma hoi. ((hieu cu) or (hieu ca)) nhan luc van ((hanh ve) OR (hanh kem)) su triet*.