Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
tranh he » trinh he, tranh ha, tinh he
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 he thong cong ((dan toan) or (anh tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh tranh he thong cong ((dan toan) OR (anh tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tranh he thong cong ((dan toan) or (anh tuan)) cao*.