Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, anh trinh
thong cong » trong cong, tong cong, thong thong
canh tinh » hanh tinh, manh tinh, canh tranh
van thong » van thuong, van phong, va thong
chi danh » chi dan, chi anh, chi dinh
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
hang dau » hang va, hang tai
doi chi » doi khi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi danh - ((canh trinh) OR (canh tinh)) van thong cong dan ((phan cau) OR (hang dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi danh - ((canh trinh) OR (canh tinh)) van thong cong dan ((phan cau) or (hang dau))~".
• Adding a wildcard symbol may retrieve word variants: doi chi danh - ((canh trinh) OR (canh tinh)) van thong cong dan ((phan cau) or (hang dau))*.