Perhaps you should try some spelling variations:
thong cong » tong cong, thong thong, phong chong
chiet tach » chieu sach
ho chiet » ho chieu, ho thiet, hoc thiet
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
hanh tu » anh tu, danh tu
va cua » va chua, via cua, ca cua

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 - hanh va cua ((thong cong) or (trong cong)) van hanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh va cua ((thong cong) OR (trong cong)) van hanh tu.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh va cua ((thong cong) or (trong cong)) van hanh tu*.