Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
cua khong » hua khong, cua phuong, cua thuong
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua dong, cua nong
cong van » cong vang, cong san, song van
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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