Sorry about that! While our keyword corpus for Keyword Explorer is large, it does not cover all keywords. If you see "no data" reported for a keyword's volume, it means we do not yet have volume information available. The good news is that your Keyword Difficulty score is unaffected by volume data, as it relies on SERP rankings, so you can definitely still find useful data here! We are continually adding keyword volumes to our database, so we may have data for your keywords in the future.
Hopefully our coverage for Austria will improve soon!