ZOMG EIGOI always had a problem when searching Japanese text with Google-san - unless I included sum hiragana/katakana, kanji would always cause it to display Chinese results, even on google.co.jp HOWEVAR I have found a solution: using https://www.google.co.jp/webhp?lr=lang_ja returns ONLY Japanese results - even if u search English terms! ヽ(´∇`)ノMarked for deletion (Old)
That's helpful, thx!As for duckduckgo, I think setting browser language to Japanese helps. There is an option to choose country too, that's probably better for getting Japanese results