Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham luc » cham soc, nhan luc, cham cuu
nang cau » hang cau, nang dau, bang cau
va nang » van nang, da nang, cam nang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, mang may
ve cham » va cham, ve chat, vu cham
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang ma) or (nang cao)) hoi. hieu ve cham luc va nang cau ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (nang cao)) hoi. hieu ve cham luc va nang cau ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) or (nang cao)) hoi. hieu ve cham luc va nang cau ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) or (nang cao)) hoi. hieu ve cham luc va nang cau ((cua triet) OR (cua viet))*.