Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hanh tinh » nhanh tinh, thanh tinh, canh tinh
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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 ((nhieu tang) or (chieu xanh)) - ((hanh tinh) OR (hanh trinh)) cua thong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((nhieu tang) OR (chieu xanh)) - ((hanh tinh) OR (hanh trinh)) cua thong cong dan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((nhieu tang) or (chieu xanh)) - ((hanh tinh) OR (hanh trinh)) cua thong cong dan toan cau*".