Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
nhan luc » nang luc
nang mai » nang ma, nang tai, lang mai
kham luc » khai luoc, kham cuoc, than luc
danh dau » lanh dao, hang dau, danh tu
va danh » va dinh, va dan, va hanh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi

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 mai hoi. hieu vu ((kham luc) or (nhan luc)) va danh dau ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai hoi. hieu vu ((kham luc) OR (nhan luc)) va danh dau ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mai hoi. hieu vu ((kham luc) or (nhan luc)) va danh dau ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. hieu vu ((kham luc) or (nhan luc)) va danh dau ((cua triet) OR (va triet))*.