Perhaps you should try some spelling variations:
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cao » va cac, va co, va dao
va bao » va bai
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. hieu ((va cao) or (va bao)) duc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. hieu ((va cao) OR (va bao)) duc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu ((va cao) or (va bao)) duc va hanh vi cua tre*.