Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu nganh - ((canh trinh) or (((hanh trinh) or (hanh chinh)))) va nhung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - ((canh trinh) OR (((hanh trinh) OR (hanh chinh)))) va nhung cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - ((canh trinh) or (((hanh trinh) or (hanh chinh)))) va nhung cong san phan cau*.