Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
lanh manh » lanh tranh, lan anh, van manh
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien danh) or (chieu xanh)) - ((lanh manh) or (canh tranh)) va dung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (chieu xanh)) - ((lanh manh) OR (canh tranh)) va dung cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (chieu xanh)) - ((lanh manh) or (canh tranh)) va dung cong dan chan cau*.