Perhaps you should try some spelling variations:
chiet tach » chieu sach
chinh cua » chinh ca, chinh sua, hinh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
ho chiet » ho chieu, ho thiet, hoc thiet
van tay » van tai, van tan, van tam
tay cao » tao cao, tay co, toan cao

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