Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trung » thanh trung, hanh trang, danh trung
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong doan » cong dan, cong hoan, dong doanh
hoc hieu » hoc thieu, hoc hien, doc hieu
phan lap » phan dau

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: hoc hieu nganh - ((hanh trung) OR (manh trung)) cua nhung cong doan ((phan tu) OR (phan lap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - ((hanh trung) OR (manh trung)) cua nhung cong doan ((phan tu) or (phan lap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - ((hanh trung) OR (manh trung)) cua nhung cong doan ((phan tu) or (phan lap))*.