Click the Advanced link to the right of the Search button on the right side of the top navigation bar.
Enter desired Search Keywords and select the time frame and Search Elements.
Click the Search Knowledge Base button at the bottom of the page.
You have successfully searched the Community Knowledge Base.
Requirements
Access Knowledge Base Role
Notes
+ and - can be used when searching to form more complex searches (i.e. +food+apple-pear would search for anything containing both food and apple, but not pear).