How about "everything from pirates to careebian" ? ;-)

use strict;
use warnings;

while(<DATA>){
  chomp;
  print $1,$/ if /(pirates.*careebian)/; 
}

__DATA__
piratesofcareebian100
pirates of careebian100
pirates of careebian 100
pirates1 of careebian 100
pirates2 of careebian 100
pirates3 of careebian 100
[download]

How about "everything from pirates to careebian" ?
But what about if the wording of the OP changes? Then your solution would no longer be useful.

Correct! He would need to change the regular expression. But then I was not completely serious in my reply... (even though it works!)

One could also use variables in the regex like /($from.*$to)/.