If you are referring to searching for a word in a single pdf with multiple pages, Yes, you can click on Magnifying glass in the bottom>enter the search item>tap Search>Reader will show you the results. Tap left or right arrow to jump on to the next or previous match.
But if you are referring to searching a single word in multiple pdfs, then i am afraid, that option is not available.
Let me know if that is not the case.
Thanks for the answer. But yes I need to search a word in multiple
pdfs.That works on pc but not on I staff.