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