Hey Jorg,
how can you use match_phrase to find all available phrases ? The goal is not to find specific phrases but text inside the quotation symbols. Could you be more specific please? I know that it's been a long time since the last answer in the topic, but I could use some help 
This:
.setQuery(QueryBuilders.matchPhraseQuery("body", ""(.*?)""))
returns nothing for me.
Thank you in advance for your time,
Konstantina