Google+ Checkvist community posts 2013-2018

How do I search for items which do NOT have either of two tags? I've tagged my personal items with #personal. I've tagged work items with #work. I'd like to search for items which I missed, and failed to tag with either of these.

Can someone suggest the CSS attributes for reducing the white space around list entries? I'm working on a "compact" stylesheet. I'd like to try and fit a few more lines on the page.