Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, dua tren
luc van » luoc van, luu van, duc van
te sach » toc sach
sach vu » sach va, sach tu, sach uu
hieu va » hieu qua
vu nang » vuc nang, va nang, vu dang
x hoi » xa hoi, o hoi, x ho

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