Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
tuan dang » tran dang, tuan bang, tuan dung
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cao » toan cao, thai cao, than cap

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 - ((hanh trung) or (hanh trinh)) tuan dang ((cong ban) OR (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((hanh trung) OR (hanh trinh)) tuan dang ((cong ban) OR (cong san)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - ((hanh trung) or (hanh trinh)) tuan dang ((cong ban) OR (cong san)) than cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((hanh trung) or (hanh trinh)) tuan dang ((cong ban) OR (cong san)) than cao*.