Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu tuc » hieu thuc, hieu luc, hieu thuoc
cham xuc » chat xuc, cham soc, pham duc
san chu » san phu, san chi, san cho
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu tu » chieu tu, hien tu, lieu tu
ky dong » ly dong, ky dang, ky cong
chu tre » cho tre, chu tri, cuu tre
co hoi » co hoc, co loi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dong co hoi. ((hieu tu) or (hieu tuc)) ((cham xuc) or (cam xuc)) van thanh san chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dong co hoi. ((hieu tu) OR (hieu tuc)) ((cham xuc) OR (cam xuc)) van thanh san chu tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky dong co hoi. ((hieu tu) or (hieu tuc)) ((cham xuc) or (cam xuc)) van thanh san chu tre*.