[source]
Info

Filter

This constructs a table by extracting rows from the complete data set whose column entries match specified values. Columns are referenced using the first few letters of their name followed by a colon (:) and then the value to match. For example, the filter desc:raspberrypi would extract all rows having the string raspberrypi in their Description column.

You can use logical operators (&&, ||, and !) and comparison operators (<, >, ==) along with parentheses for grouping. For example, this would filter for repos having combined stars and forks greater than 100 and a size of at least 10000:

(stars: + forks: > 100) && size:>=10000

Search

This is for "quick-and-dirty" searching. It will do a live search of all columns for the text you enter. As you type in this field, rows of filtered data that have no matching text in any column will be hidden, leaving only matching rows.