The search function in Adobe Acrobat Reader allows you to locate words or phrases while working with PDF documents, even if it has been converted to PDF using character recognition technology (OCR).

The Optical Character Recognition (OCR) feature in Google Drive allows users to automatically extract text from PDF files and save them in a Google Docs document. This can help to save time when ...

Here's how to find them. With your PDF document open in Files, swipe rightwards from the left edge of the screen.