Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
duong cong » dung cong, luong cong, duong trong
trung dap » trung cap, trung dai, trung dam
ung cong » dung cong, luong cong, cuong cong
van tuan » van quan, van ban, anh tuan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu xanh) OR (chieu sach)) - hanh trung dap ((ung cong) or (duong cong)) van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu xanh) OR (chieu sach)) - hanh trung dap ((ung cong) OR (duong cong)) van tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu xanh) OR (chieu sach)) - hanh trung dap ((ung cong) or (duong cong)) van tuan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu xanh) OR (chieu sach)) - hanh trung dap ((ung cong) or (duong cong)) van tuan cau*.