Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, dieu hanh, tien anh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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 ((tieu xanh) OR (chieu xanh)) - ((hanh trinh) or (canh tranh)) va nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (chieu xanh)) - ((hanh trinh) OR (canh tranh)) va nhung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) OR (chieu xanh)) - ((hanh trinh) or (canh tranh)) va nhung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) OR (chieu xanh)) - ((hanh trinh) or (canh tranh)) va nhung cong tan toan cau*.