use strict;
use Data::Dumper;

my @searchwords = qw|Bird SnaKe|;
$|++;
print "MINIMUM NUMBER OF MATCHES PLEASE: ";
my $minMatches;
$minMatches = <STDIN>;
chomp($minMatches);

use XML::Simple;
undef $/;

open(H, qq|oo.dat|) or die $!;
my $filestuff = <H>;
close(H);

#print $filestuff;

my $newXML = XMLin($filestuff);

my $ref = $newXML;

#stripe your values

foreach my $word (@searchwords) {
  foreach(keys %$ref){
      if (index($ref->{$_}->{words},lc($word)) > 0){
	  $ref->{$_}->{confidence}++;
          push @{$ref->{$_}->{WORDSFOUND}}, $word;
      }
  }
}

#print the ones you like
foreach(keys %$ref){
   my $outline = qq|FOUND @{$ref->{$_}->{WORDSFOUND}} in $_\t| . $ref->{$_}->{words} . qq|\n|;
   print $outline if ($ref->{$_}->{confidence} >= $minMatches);
}

##</code><code>##

perl useoo.pl
MINIMUM NUMBER OF MATCHES PLEASE: 1
FOUND Bird in MS_1	dog, cat, fish, bird
FOUND Bird in MS_2	dog, cat, fish, bird, cow, goat
FOUND Bird SnaKe in MS_3	dog, cat, fish, bird, snake, orange

C:\Temp>perl useoo.pl
perl useoo.pl
MINIMUM NUMBER OF MATCHES PLEASE: 2
FOUND Bird SnaKe in MS_3	dog, cat, fish, bird, snake, orange