Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, hanh trinh, minh trang
chi xanh » chi anh, chi danh, chi hanh
choi dan » hoi dan, hoa dan, hoc dan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi xanh) or (choi dan)) - ((hanh trang) OR (canh tranh)) va nhung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (choi dan)) - ((hanh trang) OR (canh tranh)) va nhung cong dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) or (choi dan)) - ((hanh trang) OR (canh tranh)) va nhung cong dan chan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (choi dan)) - ((hanh trang) OR (canh tranh)) va nhung cong dan chan cau*.