tsearch2 headline options

Hi all

I have following problem when I use this

select headline('asd asd asd asd asd asd asd asd asd asd asd asd more more
more more more more more', to_tsquery('asd'), '');

I got this

"<b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b>
<b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b> <b>asd</b> more
more more"

So result is shorted than original text. I tryed set MinWords and
MaxWords. But it doesn't help me. So question is how can I get original
text?

Best regards

    John