Certain albums not showing up in app but available via weblink

[Musicfan71]

I've noticed when I select an artist in the app, sometimes certain albums don't appear. It's still possible to get them using web and selecting them via a web link for the said album on Spotify using Google. I wanted to know why this is the case and if there's a fix?

Examples of albums:

Symphony X - Paradise Lost

Yngwie Malmsteen - Rising Force

Yngwie Malmsteen - Spellbound

Again, all 3 available via weblinks for Spotify but not showing up in album list for said Artist or directly via search in app. 

Thanks.