Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
tu van » tu va
ma hoi » mai hoi, xa hoi, ma hoa
tam tu » cam tu, dam tu, tam thuc
nam tu » nam thu, nam thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ky nang ma hoi. hieu van ((tam tu) or (nam tu)) va hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky nang ma hoi. hieu van ((tam tu) OR (nam tu)) va hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu van ky nang ma hoi. hieu van ((tam tu) or (nam tu)) va hanh vi ((cua tre) or (cua triet))*.