Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh tranh » hanh trinh, hanh trang, lanh tranh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
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: theo ((chieu sang) OR (chieu sach)) - ((hanh tranh) or (canh tranh)) cua dung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - ((hanh tranh) OR (canh tranh)) cua dung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (chieu sach)) - ((hanh tranh) or (canh tranh)) cua dung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (chieu sach)) - ((hanh tranh) or (canh tranh)) cua dung cong dan toan cao*.