Perhaps you should try some spelling variations:
phan duc » pham duc, phan tu, phan dau
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
duc van » duc va, duc tan, duc manh
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
bai ky » ban ky, sai ky, bac ky
tu bai » tu ban, tu bat, te bai

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

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