GCP log explorer find duplicated specific text message

Question

I am trying to find some duplicated log like for example:

"[entry] shipmentOrder 1234" 
"[entry] shipmentOrder 1234"
"[entry] shipmentOrder 1235"
"[entry] shipmentOrder 1236"

In that case case I would like to find all the log that appear two time (1234 in that example). Since 1234 is a random number I did not find any way to achieve that. Anyone had similar need ?

Thanks for your help!

Jonathan.