Ask HN: Quick question about HN Toolkit regex

I'm currently using HN Toolkit (http://userscripts.org/scripts/show/25039) to block Apple-related articles. Unfortunately the block fails to filter 50% of the articles.

My regex for filtration is: Apple|Steve Jobs|iPhone|iPad

It should work fine, but it doesn't. If any one is using HN Toolkit and/or has a solution to this problem, please post it!