I have created a block search for the category called motor
http://screencast.com/t/gjjSXclm
3 forms have fields

http://screencast.com/t/qEQTmNjDp

but it is not visible filter
2016-09-30_1539.jpg2016-09-30_1540.jpg2016-09-30_1540_001.jpg2016-09-30_1540_001.jpg

why?