Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
tu van » tu va
cam tu » cam thu, dam tu, tam tu
nam tu » nam thu, nam thuc
cua te » cua tu

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 mai hoi. hieu van ((cam tu) or (nam tu)) va hanh vi ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky nang mai hoi. hieu van ((cam tu) OR (nam tu)) va hanh vi ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu van ky nang mai hoi. hieu van ((cam tu) or (nam tu)) va hanh vi ((cua te) or (cua triet))*.