Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, lieu va
te sach » toc sach
lam luc » lao luc, lam duoc
hanh ve » hanh vi, hanh va, hanh kem
van lam » van nam
ty hang » ly hang, ty xang, thi hang
ty lang » tay lang, ty xang, tu lang
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty hang)) xa hoi. hieu van lam luc va ((hanh ve) OR (thanh van)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) OR (ty hang)) xa hoi. hieu van lam luc va ((hanh ve) or (thanh van)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) OR (ty hang)) xa hoi. hieu van lam luc va ((hanh ve) or (thanh van)) cua tre*.