Query to get content that match some value in pdf and text extraxcted from iamge

i indexed my pdf files and images using fscrawler and tesseract-ocr aand now i can extract the text from image and display pdf file content on Kibana , my question is that i want to do query in kibana devtools interface to find the content matching o word pr a sentence in image and pdf can you give a real example of queries for that.
example : get the content having the sentence "hello word" from image or pdf

thank you

Let's keep the discussion in one place. I'm closing this thread.