Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trang » canh tranh, hanh trang, banh trang
dang cong » dung cong
trang va » tran van, hang va
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (chieu xanh)) - canh trang va dang cong ((dan toan) OR (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - canh trang va dang cong ((dan toan) OR (dan than)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - canh trang va dang cong ((dan toan) OR (dan than)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - canh trang va dang cong ((dan toan) OR (dan than)) tap*.