Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
nhung don » nhung bo
nhung van » phung van, nhung bai, nhung cau
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 - hanh tranh cua ((((nhung don) or (nhung van))) or (hang cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh tranh cua ((((nhung don) OR (nhung van))) OR (hang cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh tranh cua ((((nhung don) or (nhung van))) or (hang cong)) dan toan cau*.