Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, minh trang
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
va thong » va thuong, va phuong, he thong
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: doi ((hieu manh) or (chieu sach)) - ((hanh trang) OR (hanh trinh)) va thong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sach)) - ((hanh trang) OR (hanh trinh)) va thong cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (chieu sach)) - ((hanh trang) OR (hanh trinh)) va thong cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sach)) - ((hanh trang) OR (hanh trinh)) va thong cong dan toan cau*.