Perhaps you should try some spelling variations:
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, lieu va, hieu ve
hanh ve » hanh vi, hanh va, hanh kem
lam luc » lao luc, lam duoc
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
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.

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