The /g at the end of each regexp makes it remember where in the line it has reached. Each match starts from where the previous one ended. Get rid of them and it should do what you intended. 
#!/usr/bin/perl -w

use strict;

my $hdata = 'FALCHE;12;ff;20020101;Pori;Yyteri;lietteet;testi;kylma';

my $crit1 = "pori";
my $crit2 = "yyteri";


if (($hdata =~/$crit1/i) && ($hdata =~/$crit2/i)) {print "$hdata\n"}

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In reply to Re: Finding multiple words from a line of flatfile by Bilbo
in thread Finding multiple words from a line of flatfile by Anonymous Monk

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