Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
nang xa » nang x, lang xa, nang ma
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
xuc va » tuc va, luc va, xac va

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 tham ((xuc va) OR (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 tham ((xuc va) OR (duc va)) danh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang xa hoi. hieu van tham ((xuc va) OR (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 tham ((xuc va) OR (duc va)) danh vi ((cua tre) or (cua triet))*.