Some songs are not found when searched for in Spotify

[snyderks]

Examples include:

• The Patience of a Saint - 2013 Remastered Version by Electronic
• Dancing on the Grave - Original Bursting+Blooming Arrangement by Passion Pit
• Arcadia - 2011 Remastered Version by Ash
• More (Remastered) by The Sisters of Mercy

All appear to have some kind of extra info on them for a specific version of a song. Some successfully return results when searching under the normal Spotify search, but others do not.