Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, dieu hanh, hien hanh
hieu manh » chieu xanh, dieu hanh, hien hanh
trang va » tran van, hang va
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (((hieu manh) OR (hieu nganh)))) - hanh trang va thong cong dan toan cau~.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (((hieu manh) or (hieu nganh)))) - hanh trang va thong cong dan toan cau*.