Whenever I try to find a word in the PDF document I'm told it's not in the document, when I know that it is. I didn't have this problem with the earlier version. I'm on a PC using Windows Enterprise 7.

Thank you lily_smith for your advice.  I guess the issue is that to adopt your suggestion costs, while under the previous Adobe Reader version I was able to find words in PDFs without the requirement to convert to Word, which is not really a satisfactory solution when all I'm trying to do is to locate some text in a voluminous document.  Unless the same functionality is available in DC, I'd rather go back to the previous version, which apparently is no longer available to download.