Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
dang huong » dang thuong, dang hung, dong huong
hieu xanh » chieu xanh, hieu manh, dieu hanh
tranh cua » doanh cua, manh cua
van thang » van thanh, van khang, van hang
cua dang » cua cong, cua ban
dan than » dan chan, ban than, van than

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