Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
luan duong » tuan duong, luan luong, luan dong
duong cong » dung cong, luong cong, duong trong
hieu manh » chieu xanh, dieu hanh, hien hanh
hanh dung » thanh dung, anh dung, hanh dong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van
van cac » van hac, van cau, van bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu nganh) or (hieu manh)) - hanh dung luan duong cong dan van cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - hanh dung luan duong cong dan van cac*.