Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
trung tan » trung tran, trung tang, truong tan
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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

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