Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
canh doanh » hanh doanh, chinh doanh, doanh doanh
cua khong » hua khong, cua phuong, cua thuong
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
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 - canh doanh ((cua tong) or (cua khong)) huong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - canh doanh ((cua tong) OR (cua khong)) huong dan than cau*.