Perhaps you should try some spelling variations:
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va thai » van thai, va tai, va tham
cua tre » cua te, cuu tre, cua triet
te cao » te bao
vi cua » vai cua, di cua
do va » do van
so va » so van, so vat, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cao ky lang xa hoi. hieu va thai ((do va) OR (so va)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cao ky lang xa hoi. hieu va thai ((do va) OR (so va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te cao ky lang xa hoi. hieu va thai ((do va) OR (so va)) hanh vi cua tre*.