Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hien anh » hien hanh, thien anh, dien anh
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 ((hien anh) or (dieu hanh)) - canh tranh cua nhung cong thanh ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (dieu hanh)) - canh tranh cua nhung cong thanh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) or (dieu hanh)) - canh tranh cua nhung cong thanh ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (dieu hanh)) - canh tranh cua nhung cong thanh ((toan cau) OR (toan ban))*.