how to search 'keywords' in pdf document properties in google drive

Hi,

I have thousands of documents in google drive folders. I intend to enter data in the "keywords" section of Document Properties.

But, doing a test I found that neither Adobe Reader DC nor Foxit Reader searches in the Document Properties when I try to search for the keywords I have entered.

Does anybody know if this is even possible?  So here's what I'm trying to accomplish:

Add a keyword in the document properties of a pdf document.

The document is in Google Drive.

I want to search pdf documents in Google Drive using the keyword in the document properties.

Thank you so much for your help!

Joan