Perhaps you should try some spelling variations:
luan phan » luan van, luan hoan
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
thi luan » thi lan, thi xuan, thi loan
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, duc man
cua tre » cua te, cuu tre, cua triet
dua ban » dia ban, cua ban, qua ban
tu sai » tu bai, tu san, tu cai
sai ky » sac 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 sai ky nang xa hoi. thi luan phan ((duc ban) or (dua ban)) hanh vai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang xa hoi. thi luan phan ((duc ban) OR (dua ban)) hanh vai ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. thi luan phan ((duc ban) or (dua ban)) hanh vai ((cua tre) or (cua viet))*.