Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
cua bang » chua bang, cua ban, cua hang
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (trieu tinh)) - hanh trung ((cua bang) OR (cua dang)) cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (trieu tinh)) - hanh trung ((cua bang) OR (cua dang)) cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (trieu tinh)) - hanh trung ((cua bang) OR (cua dang)) cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (trieu tinh)) - hanh trung ((cua bang) OR (cua dang)) cong dan phan cau*.