Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((dieu hanh) or (chieu sach)) - thanh trung ((cua dung) or (qua dung)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (chieu sach)) - thanh trung ((cua dung) OR (qua dung)) cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (chieu sach)) - thanh trung ((cua dung) or (qua dung)) cong dan toan cao*.