Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
doc hieu » toc thieu, hoc thieu, hoc hien
dan toan » van toan, dan than, manh toan

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 khong cong ((dan toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh tranh cua khong cong ((dan toan) OR (anh tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tranh cua khong cong ((dan toan) or (anh tuan)) cau*.