Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh thang » nhanh thang, thanh thang, hanh trang
cac phuong » cac truong
cong thanh » dong thanh, cong trinh, cong tan
thang cac » thong cac, hang cac, thanh cac
cong san » cong tac
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: theo ((chieu xanh) OR (chieu sang)) - hanh thang cac phuong ((cong thanh) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - hanh thang cac phuong ((cong thanh) OR (cong san)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - hanh thang cac phuong ((cong thanh) or (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sang)) - hanh thang cac phuong ((cong thanh) or (cong san)) toan cau*.