Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
dang cong » dung cong
cua dang » cua cong, cua ban
cong ban » cong bang, cong san, cong tan
ban chat » van chat, bao chat, luan chat
chat cua » nhat cua, chat va, chat huu

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 xanh) OR (chieu sach)) - ((hanh tranh) or (hanh trinh)) cua dang cong ban chat cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - ((hanh tranh) OR (hanh trinh)) cua dang cong ban chat cua.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - ((hanh tranh) or (hanh trinh)) cua dang cong ban chat cua".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - ((hanh tranh) or (hanh trinh)) cua dang cong ban chat cua*.