Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh van » tran van, trinh van, thanh van
hang cong » dang cong, hang nong, bang cong
van thong » van thuong, van phong, va thong
van hang » van khang, van hoang, van thang
cong van » cong vang, cong san, song van
thong tu » phong tuc, thong tin, thong ke

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)) - canh tranh van hang cong van thong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - canh tranh van hang cong van thong tu.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (hieu manh)) - canh tranh van hang cong van thong tu*.