Unfortunately DDG is much worse in a different way - it seems incapable of dealing with synonyms. I can't recall a specific example since I switched back to Google, but it's on the order of searching for Python and getting results for Java (wrong subtree of the taxonomy), searching for Wellington and getting results for the whole of New Zealand (ignoring specifiers), or searching for double glazed windows and getting results for Microsoft Windows (no understanding of the semantics of the words being related).