Hi Henrik, currently this sort of text matching is not available in SEQUEmatic but I can see how it would be useful in this scenario.
I could implement a version of this which could check for "contains" or "does not contain" however in order to manage your AND and OR scenarios you would still need to nest your IF statements as I don't have plans to change the way conditions work in the near future.
Give me a week to work on this, and I'll post back here once it's ready.