my @searchs = qw(Tom Test);
my @veranstalter = map{'veranstalter LIKE '.$_}@searchs;
my @beschreibung = map{'beschreibung LIKE '.$_}@searchs;
my $statement = 'SELECT * FROM event_topic WHERE ('.join(' OR ',@veranstalter).') AND ('.join(' OR ',@beschreibung).') ORDER BY time;';
my $sth = $dbh->prepare($statement);
$sth->execute();
while(my @array = $sth->fetchrow_array()){
  print "@array";
}
$sth->finish();