Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
van than » van thanh, van thang, van phan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh tranh cua ((nhung cong) or (hang cong)) ((van than) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh tranh cua ((nhung cong) OR (hang cong)) ((van than) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tranh cua ((nhung cong) or (hang cong)) ((van than) or (van tuan)) cau*.