Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
lang xa » lang ha, dang xay, lang van
van lao » van dao, van bao, van lam
lao tuc » dao tuc, lao tu, lao luc
va hanh » van hanh, va thanh, va danh
ca tren » cau tren, cu tren, la tren
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
tuc va » thuc va, truc va, tuc xa

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 y lang xa hoi. hieu van lao tuc va hanh vi ((ca tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu van lao tuc va hanh vi ((ca tren) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu van lao tuc va hanh vi ((ca tren) or (cua tre))*.