Perhaps you should try some spelling variations:
thien van » thi van
van phan » van phong, van thanh, luan phan
phan duc » pham duc, phan tu, phan dau
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
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. thien van phan duc ban hanh vai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang xa hoi. thien van phan duc ban hanh vai ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang xa hoi. thien van phan duc ban hanh vai ((cua tre) or (su triet))*.