Smart Folders - Finder - multiple file extensions

Hi All,

I'm only a couple of years into iOS so please forgive me if this is a really dumb question but:

When I create a smart folder in Finder I can't seem to add a second search criteria without the original information disappearing.

As an example: If I search for 'file extension' and '.docx' over the past seven days the search functions correctly.

If I search for 'file extension' and '.doc' over the past seven days the search also functions correctly.

If however I try to add both searches together for the same smart folder so that I can see both document types i've been using over the past 7 days then it returns a blank folder. Surely i'm doing something wrong and I don't have to have two different smart folders for each file extension?

Thanks in advance! 🙂