Search plugin (I18N)

[Shasaar]

Hello,

I'd like to add more tags than just one to limit the search results only to those pages but I'm already ripping my hair off cause whatever I do, it only accepts one tag.

The situation is as following:
Pages are:
Some Other Pages
Categories > Categorie 1 > products of Categorie 1
Categories > Categorie 2 > products of Categorie 2
Categories > Categorie 3 > products of Categorie 3

If I use now (% searchresults addTags=_parent_categories %), the searchresult is only a list with a link to Categorie1 - Categorie3, but NO products are shown.

If I use instead (% searchresults addTags=_parent_categorie1 %), the searchresults are only the products in Categorie1.

But my searchresults should be the results of all the products in Categorie 1-3.
How can I achieve that?

I tried (% searchresults addTags=_parent_categorie1 _parent_categorie2 %) or (% searchresults addTags=_parent_categorie1 addTags=_parent_categorie2 %), but it's not working.

Does anybody have an advice for me, what I'm doing wrong?

Thank you very much in advance.
Cheers.
Shasaar