Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, dua tren
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky

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

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