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