Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh thanh » canh tranh, danh thanh, nhanh thanh
anh thanh » danh thanh, nhanh thanh, thanh thanh
bang cong » dang cong, bang song, hang cong
van bang » van ban, van nang, von bang
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: toc thieu xanh - ((canh thanh) OR (anh thanh)) van bang cong ((xuan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - ((canh thanh) OR (anh thanh)) van bang cong ((xuan toan) OR (dan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - ((canh thanh) OR (anh thanh)) van bang cong ((xuan toan) or (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - ((canh thanh) OR (anh thanh)) van bang cong ((xuan toan) or (dan than)) cau*.