Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thong cong » trong cong, tong cong, thong thong
lanh sang » anh sang, lanh bang, doanh sang
cua thong » cua thuong, cua khong, cua tong
anh dong » anh huong, anh son
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, 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) OR (chieu sang)) - ((lanh sang) or (anh dong)) cua thong cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sang)) - ((lanh sang) OR (anh dong)) cua thong cong tac than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sang)) - ((lanh sang) or (anh dong)) cua thong cong tac than cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sang)) - ((lanh sang) or (anh dong)) cua thong cong tac than cau*.