Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu xanh » chieu xanh, dieu hanh, hien hanh
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
gian tap » gian tay, gian tam, gian thai

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 xanh) OR (hieu manh))) or (hieu nganh)) - canh tranh cua dung cong dan gian tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((((hieu xanh) OR (hieu manh))) OR (hieu nganh)) - canh tranh cua dung cong dan gian tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((((hieu xanh) OR (hieu manh))) or (hieu nganh)) - canh tranh cua dung cong dan gian tap".
• Adding a wildcard symbol may retrieve word variants: doc ((((hieu xanh) OR (hieu manh))) or (hieu nganh)) - canh tranh cua dung cong dan gian tap*.