Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cuu tre » cau tren, cau treo
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cam luc » cam xuc, cau luc
hieu ve » hieu van
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cai ky » cao ky, cac ky, cam ky
luc va » duc va, tuc va, loc va
tu cai » tu cac, tu can, tu 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 cai ky nang xa hoi. ((hieu ve) or (hieu va)) cam luc va hanh vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang xa hoi. ((hieu ve) OR (hieu va)) cam luc va hanh vai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang xa hoi. ((hieu ve) or (hieu va)) cam luc va hanh vai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang xa hoi. ((hieu ve) or (hieu va)) cam luc va hanh vai ((cua tre) OR (cuu tre))*.