Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh mang » nhanh mang, nhanh lang, thanh hang
dang cong » dung cong
van dang » van dong, van dung, van nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dieu hanh) or (chieu xanh)) - ((hanh mang) OR (hanh trang)) van dang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (chieu xanh)) - ((hanh mang) OR (hanh trang)) van dang cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (chieu xanh)) - ((hanh mang) OR (hanh trang)) van dang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu xanh)) - ((hanh mang) OR (hanh trang)) van dang cong dan toan ban*.