Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
doc hieu » toc thieu, hoc thieu, hoc hien

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 nganh - hanh trinh cua thong cong ((anh tuan) OR (((ban hang) OR (ngan hang)))) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - hanh trinh cua thong cong ((anh tuan) or (((ban hang) OR (ngan hang)))) cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh trinh cua thong cong ((anh tuan) or (((ban hang) OR (ngan hang)))) cau*.