Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tranh cua » doanh cua, manh cua
van phanh » van thanh, van hanh, van khanh
van phan » van phong, van thanh, luan phan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tranh cua ((nhung cong) OR (thong cong)) ((van phan) OR (van phanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tranh cua ((nhung cong) OR (thong cong)) ((van phan) or (van phanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tranh cua ((nhung cong) OR (thong cong)) ((van phan) or (van phanh)) cau*.