Perhaps you should try some spelling variations:
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
dang huong » dang thuong, dang hung, dong huong
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
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: hoc ((hieu nganh) or (vien nganh)) - canh tranh cua dang huong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (vien nganh)) - canh tranh cua dang huong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (vien nganh)) - canh tranh cua dang huong dan than cau*.