Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
qua cham » qua hai, qua cac, va cham
cham tuc » nham thuc, pham thuc, tham thuc
thanh vi » hanh vi, thanh va, thanh ve
tuc van » thuc van, truc van, tuc va
cua tre » cua te, cuu tre, cua triet
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
vi cua » vai cua, di cua

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 ((y lang) or (o lang)) van hoa. hieu qua cham tuc van thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y lang) OR (o lang)) van hoa. hieu qua cham tuc van thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((y lang) or (o lang)) van hoa. hieu qua cham tuc van thanh vi cua tre*.