Sorry to learn about these missing articles in Pocket. We'd like to try and help you track them down if we can. If you're interested, just click "Contact Pocket Support" at https://help.getpocket.com/ and reference this post, and someone on our team will take it from there.
Regarding your other comment, Pocket offers basic search (title and URL) for free, and Pocket Premium includes full-text search so you can find text throughout all of the articles you've saved (with support for operators if you want to get fancy).
In addition, you can save any URL to Pocket, so feel free to try saving those Tweets or Facebook Posts. How they'll appear in Pocket depends on a few factors, though, including whether they're public or private.
Appreciate you responding to this thread. Now that you're here:
I love Pocket, but I feel the "Discover" feature could be greatly improved. I do find great articles in there, but you could spare your users some scroll fatigue by giving them more options on the Context Menu's "Hide This".
Right now the options aren't great, because when I hit "It's not Relevant to Me" on yet another Medium.com article about Gary Vee and "the hustle", it doesn't seem to change the number of low-quality recommendations I get on this topic from similarly low quality domains like "forbes.com" and "huffingtonpost.com". Letting users filter out certain domains (like how you can filter subreddits using RES extension) would be a great way to restrict the "Discover" feature to high quality stuff. That alongside the original unfiltered, content (called "Top Reads" for example) would give me the best of both worlds.
Regarding your other comment, Pocket offers basic search (title and URL) for free, and Pocket Premium includes full-text search so you can find text throughout all of the articles you've saved (with support for operators if you want to get fancy).
In addition, you can save any URL to Pocket, so feel free to try saving those Tweets or Facebook Posts. How they'll appear in Pocket depends on a few factors, though, including whether they're public or private.
Hope this helps!