Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
manh trung » manh tung, thanh trung, manh hung
hien xanh » hien hanh, hien nhanh, hien khanh
trung cua » truong cua, trung tuan, trung cap
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap

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: hoc ((hien xanh) OR (chieu xanh)) - manh trung cua ((hang cong) OR (dang cong)) van than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - manh trung cua ((hang cong) or (dang cong)) van than cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - manh trung cua ((hang cong) or (dang cong)) van than cau*.