Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
cua tre » cua te, cua triet, dua tren
ky lang » ky nang, ky dang, ky tang
bao ky » cao ky, ban ky, bac ky
doc va » duoc va, hoc va, duc va
soc va » hoc va, loc va, goc 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 bao ky lang xa hoi. hieu va tham ((soc va) or (doc va)) hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bao ky lang xa hoi. hieu va tham ((soc va) OR (doc va)) hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te bao ky lang xa hoi. hieu va tham ((soc va) or (doc va)) hanh vi ((cua tre) or (cuu tre))*.