Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
phan duc » pham duc, phan tu, phan dau
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
van phan » van phong, van thanh, luan phan
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
tu sai » tu bai, tu cai, tu lai

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) OR (tu san)) ky nang xa hoi. thi van phan duc ban hanh vai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu san)) ky nang xa hoi. thi van phan duc ban hanh vai ((cua tre) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) OR (tu san)) ky nang xa hoi. thi van phan duc ban hanh vai ((cua tre) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) OR (tu san)) ky nang xa hoi. thi van phan duc ban hanh vai ((cua tre) or (cua viet))*.