I'm also desperate for this feature. It's something that I do very often on the desktop and need to do the same on the tablet when in transit. I've tried to get around it with shortcuts to saved searches but this means I have to pre-configure them on the desktop. Also, when I don't have a connection, half the time they don't work (even though I'm a premium user with notebooks set to offline sync, and offline search indexing enabled, etc. etc.) which is a whole other extremely frustrating story.