Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
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: doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((nhung don) or (hang cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((nhung don) OR (hang cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((nhung don) or (hang cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((nhung don) or (hang cong)) dan than cau*.