Cookie Cleaning doesn't clear a lot of cookies

Ccleaner is great software but I'd like to ask why a lot of cookies, that aren't in the keep list, don't get cleared. A lot of them aren't password or other retained form data so should be cleared. Sample screen attached (just after 'cleaner' has been run but with some info deleted via paint)

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Make sure you have Adobe Flash Player ticked in CCleaner located at:

Cleaner->Applications->Multimedia

Some of those look like advertiser cookies which can be permanently blocked with adblocking browser extensions, and/or a HOSTS file.