Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cau » va cau, ve cac, le cau
ke cau » ket cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu ((ve cau) OR (ke cau)) luc va hanh vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ((ve cau) or (ke cau)) luc va hanh vi ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ((ve cau) or (ke cau)) luc va hanh vi ((cua tre) OR (cuu tre))*.