Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
tay lang » tay tang, tay quang, tham lang
tai lang » tai cong, thi lan, tai san
thanh ve » thanh va, thanh vien, thanh van
hanh ve » hanh vi, hanh va, hanh kem
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
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: toc sach ((tay lang) or (tai lang)) van hoi. hieu vu cham tuc va ((thanh ve) OR (hanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((tay lang) OR (tai lang)) van hoi. hieu vu cham tuc va ((thanh ve) OR (hanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((tay lang) or (tai lang)) van hoi. hieu vu cham tuc va ((thanh ve) OR (hanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((tay lang) or (tai lang)) van hoi. hieu vu cham tuc va ((thanh ve) OR (hanh ve)) cua tre*.