You should put the whole code in a single line without pressing ENTER. You can also change it like this:
(Field.jr_scannerfunkeinsatzgebiet LIKE '%industrie%' AND Listing.catid IN (19,20) AND Field.jr_scannerkabeleinsatzgebiet <> "" AND Field.jr_scannerfunkeinsatzgebiet <> "" AND Field.jr_scannerkabeleinsatzgebiet IS NOT NULL AND Field.jr_scannerfunkeinsatzgebiet IS NOT NULL)
No need to include Listing.catid <> 17 if you are already filtering by cat ids 19 and 20.