Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
ban thanh » ban hanh, ban hang
ho chiet » ho chieu, ho thiet, hoc thiet
va thong » va thuong, va phuong, he thong
ban than » van thanh, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - ((thanh trung) OR (thanh tung)) va thong cong ((ban than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((thanh trung) OR (thanh tung)) va thong cong ((ban than) OR (ban thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((thanh trung) OR (thanh tung)) va thong cong ((ban than) or (ban thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((thanh trung) OR (thanh tung)) va thong cong ((ban than) or (ban thanh)) cau*.