Multiple Hashtags

Hi, when populating “twitter search name” for feed type (hashtag, search and more feed),
I’d like to enter several hastags all pulled from same use name. My guess was:

from:UserName%#Cat, from:UserName%#BigCat

However this does not seems to work (duplicated entries are displayed). What is the correct symbol/format to indicate multiple search results for this plugin?

Thank you!