As others have pointed out your (not quite) XML data is not consistent with your code. The following sample may help:
use strict;
use warnings;
use XML::Twig;
my $xml = <<XML;
<root>
<para>aaaaaaaaaaaaaaaaa dsnbbtejk</para>
<para>aldmflskddddddddddddddddddffffffffffffff</para>
</root>
XML
my $tmp = XML::Twig->new();
$tmp->parse ($xml);
my $root = $tmp->root;
print $_->trimmed_text (), "\n" for $root->children ('para');
Prints:
aaaaaaaaaaaaaaaaa dsnbbtejk
aldmflskddddddddddddddddddffffffffffffff
DWIM is Perl's answer to Gödel