Perhaps you should try some spelling variations:
thu huong » thu cong
hieu van » hieu va, thien van, lieu va
can thuc » dan thuc, van thuc, cay thuc
thu hang » thi hang, thuc hanh, thu trang
van hanh » van thanh, ban hanh, van anh
cuu thuc » cuu tac
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
co loi » co hoi
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: te sach ((thu hang) OR (thu huong)) co loi. hieu van ((can thuc) or (cuu thuc)) van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu hang) OR (thu huong)) co loi. hieu van ((can thuc) OR (cuu thuc)) van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu hang) OR (thu huong)) co loi. hieu van ((can thuc) or (cuu thuc)) van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((thu hang) OR (thu huong)) co loi. hieu van ((can thuc) or (cuu thuc)) van hanh vi cua tre*.