Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » hanh trinh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
san than » sang than, san thanh, ban than
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 tranh) or (canh tranh)) cua thong cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((hanh tranh) OR (canh tranh)) cua thong cong san than cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((hanh tranh) or (canh tranh)) cua thong cong san than cao*.