Perhaps you should try some spelling variations:
ky lang » ky dang, tay lang
ky tang » ky dang, kho tang, ky trong
hieu va » lieu va, hieu qua
tai lon » bai lon, lai lon, tai bon
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
va tai » va tac, va tap
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: te cac ((ky lang) or (((ky tang) or (ky nang)))) xa hoi. hieu va tai lon va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ((ky lang) OR (((ky tang) OR (ky nang)))) xa hoi. hieu va tai lon va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te cac ((ky lang) or (((ky tang) or (ky nang)))) xa hoi. hieu va tai lon va hanh vi cua tre*.