How to search for a string inside the “Uncompressed entities bodies” (‘when available) ?

Hello, I captured packets associated with the loading of a plain text website in my browser. I am able to find the strings manually in the Uncompressed entity body of a packet. However when I run a string search or use the command http.response and data-text-lines contains "xxxxx" it doesn't find anything. Do you have an idea how to get Wireshark to search for strings inside the uncompressed entity bodies ? Also how do I use regex or at least wildcards in my strings ?