my $parser = XML::LibXML->new();
my $doc = $parser->parse_file("main_file.XML");
my $doc1 = $parser->parse_file("second_file.XML");

#get my text
my @nodes_from_main= $doc0->findnodes('//path/to/element/text()');
my @nodes_from_second = $doc1->findnodes('//path/to/element/text()');

#get the node containing the previous text i.e containing <element1>
my @node_I_need_from_main= $doc0->findnodes('//path/to/<elements>');
my @node_I_need_from_second = $doc1->findnodes('//path/to/<elements>)');

#Note that main is unique meaning it will have only one instant from the text im matching
#where my second, third, fourth....etc. will or might have more than one match

#now im trying to find the match which is working fine

my $i=0;

for my $node_main (@nodes_from_main)
{   
   #print my node from the main file, next look for matches
   #the problem is im looping through nodes at //path/to/element/text()
   #dont know how to loop through '//path/to/<elements>' at the same time 
   #or change my path at this particular instant
   
   for my $node_second (@nodes_from_second) 
   {
     if (text from main equal text from second, "which I did already")
     {
       print my matching node from the second file, same issue I discussed in the above comment. 
       Im looking for something like this:
       print $node_I_need_from_second [$i] (matching node)
       or any other way to get the same result
       i.e print node:
        <elements>
        <element1>matching text</element1>
        <element2>other text</element2>
        <element3>other text</element3>
        </elements>
     }
     esle
     {
       #do nothing;
     }
    ++$i;
   }

}