Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
luan trong » quan trong, luat trong, luan tuong
hieu van » hieu va, thien van, lieu va
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu van) or (chieu sang)) - thanh dung luan trong cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu van) OR (chieu sang)) - thanh dung luan trong cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu van) or (chieu sang)) - thanh dung luan trong cong dan chan cau*.