Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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