Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
cua thuong » cua truong, cua phuong, ca thuong
trung cua » truong cua, trung tuan, trung cap
danh tuan » anh tuan, danh thanh, danh thang
manh tuan » anh tuan, manh toan, minh tuan

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 ((dieu hanh) OR (chieu xanh)) - thanh trung cua thuong cong ((danh tuan) OR (manh tuan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((dieu hanh) or (chieu xanh)) - thanh trung cua thuong cong ((danh tuan) OR (manh tuan)) tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (chieu xanh)) - thanh trung cua thuong cong ((danh tuan) OR (manh tuan)) tap*.