Perhaps put your reg exes in a loop an array? 
#!/usr/bin/perl 

use strict;
use warnings;
use Data::Dumper;

my @res = (
  qr/Title: (.*?), Author: (\w+) (\w+)$/,
  qr/Title: (.*?), Author: (\w+) (\w+) Publisher: (\w+)$/,
  qr/Title: (.*?), Author: (\w+) (\w+) Publisher: (\w+) Year: (\w+)$/,
);

my @answers;
while (my $line = <DATA>){
  for my $re (@res){
    my @results;
    if (@results = $line =~ /$re/){
      push @answers, [@results];
    }
  }
}

print Dumper \@answers;

__DATA__
Title: The Moor's Last Sigh, Author: Salman Rushdie
Title: The God of Small Things, Author: Arundhati Roy
Title: one, Author: two three Publisher: four
Title: five, Author: six seven Publisher: eight Year: nine

[download]
output: 
$VAR1 = [
          [
            'The Moor\'s Last Sigh',
            'Salman',
            'Rushdie'
          ],
          [
            'The God of Small Things',
            'Arundhati',
            'Roy'
          ],
          [
            'one',
            'two',
            'three',
            'four'
          ],
          [
            'five',
            'six',
            'seven',
            'eight',
            'nine'
          ]
        ];

[download]
updated:
tinkered with the format of the output
update 2:
forgot to update the code. :-( Thanks to Tanktalus for spotting it.

In reply to Re: How to get ($1, $2, ...)? by wfsp
in thread How to get ($1, $2, ...)? by ferreira

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