Japanese keywords and names can only be searched in their romanized form, i.e. written in rōmaji. In case the search terms are entered in Kanji or Kana this does not lead to any results.
Example:
Search by “Author”: Do not enter 森鴎外 or もりおうがい, but “Mori, Ōgai” or “mori, ōgai” or “mori, ogai”.

Search by “Title”: Do not enter 広辞苑 or こうじえん, but “Kōjien” or “kōjien” or “kojien”.