Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh ban » thanh ban, hang ban, hanh san
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan cau » phan cau, can cau, chinh cau
ban cua » ban quan

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

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