Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
dang cong » dung cong
hoc hieu » hoc thieu, hoc hien, doc hieu
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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 manh - canh tranh cua ((nhung cong) or (dang cong)) dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh cua ((nhung cong) OR (dang cong)) dan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua ((nhung cong) or (dang cong)) dan phan cau*.