Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach xu » sach xa, cach xu, mach xu
cua tre » cua te, cua triet, dua tren
dinh te » kinh te, dinh ve, dinh tu
cao duc » dao duc, cao suc, giao duc
van cao » van dao, van bao, van hao
lang xa » lang ha, dang xay, lang van
xu lang » cu lang, tu lang, xu dang
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach xu lang xa hoi. hieu van cao duc va ((dinh te) or (dich te)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach xu lang xa hoi. hieu van cao duc va ((dinh te) OR (dich te)) ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach xu lang xa hoi. hieu van cao duc va ((dinh te) or (dich te)) ((cua tre) or (cuu tre))*.