Thank you for your response! The Keyword Filtering method only allows a global filtering. I already use that, but it doesn't fit my needs.
What I really miss, is the control of search terms (more than one) in a single shortcode. Many keywords can not be specify exactly with only one phrase. This especially then when several related shortcodes/keywords/search terms are displayed on a single page.
Is there any way to realize that now, or to expect a feature upgrade in future?
It would be GREAT!