Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
cua thuong » cua truong, cua phuong, ca thuong
cong thanh » dong thanh, cong trinh, truong thanh
huong cua » dung cua
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong ty, cong ha
cong san » cong tac
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: hoc hieu nganh - anh huong cua thuong ((((cong tan) OR (cong san))) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - anh huong cua thuong ((((cong tan) OR (cong san))) OR (cong thanh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - anh huong cua thuong ((((cong tan) OR (cong san))) or (cong thanh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - anh huong cua thuong ((((cong tan) OR (cong san))) or (cong thanh)) toan cau*.