Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
van dang » van dong, van dung, van nang
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 sang - ((hanh trinh) OR (canh tranh)) van dang cong ((dan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh trinh) OR (canh tranh)) van dang cong ((dan toan) OR (van tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((hanh trinh) OR (canh tranh)) van dang cong ((dan toan) or (van tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((hanh trinh) OR (canh tranh)) van dang cong ((dan toan) or (van tuan)) cau*.