Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
trung dai » truong dai, truong dao, trung tam
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
ung cong » dung cong, luong cong, duong cong
toan cau » toan cao, toan ban, toan tap
dai ung » dap ung, dan ung, di ung

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: theo ((chieu xanh) OR (trieu tinh)) - hanh trung dai ung cong hach toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (trieu tinh)) - hanh trung dai ung cong hach toan cau*.