Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang co » nang cao, nang doc, nang noi
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
co hai » co dai, co hoi, o hai
cac so » cac co, cac bo, cac ho
so van » su van, vo van

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 y nang co hai. hieu van cac so van hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang co hai. hieu van cac so van hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang co hai. hieu van cac so van hanh vi ((cua tre) or (cua triet))*.