Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
hien hanh » dieu hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hien anh » thien anh, dien anh, tien anh
san cau » van cau, ban cau, can cau

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 (hien hanh)) - canh tranh cua nhung cong thanh san cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - canh tranh cua nhung cong thanh san cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (hien hanh)) - canh tranh cua nhung cong thanh san cau*.