Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 - ((hanh trang) or (hanh trinh)) cua nhung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - ((hanh trang) OR (hanh trinh)) cua nhung cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - ((hanh trang) or (hanh trinh)) cua nhung cong dan than cau*.