Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung chan » trong chan, trung can, trung nhan
trung phan » trung thanh, trung ha, dung phan
doi chieu » doc hieu, doi chi, ho chieu
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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