How to match any of the strings below. In the word 'publication date',there is atypo. How can I match all the typos also in the matching string 
#!/usr/bin/perl
while(<DATA>){
if($_ =~ m/publication date/){
print $_;
}

}

__DATA__
These are the dates.
The publication date is 20-10-09
The publicatiion dateee is 20-05-08
The publication dat is 10-06-07
The publication date's are 20-10-09,29-02-08

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In reply to Match typo by Anonymous Monk

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