We are trying to search for playlists via libspotify. We are using the search functionality to search by keyword with the following function :
search.html#ga2f64dfbcc1313e7d5179998cb28208d4">https://developer.spotify.com/technologies/libspotify/docs/12.1.45/group_search.html#ga2f64dfbcc1313e7d5179998cb28208d4
Most of the time we are getting results. But some obvious playlists seems not to be matched.
For example we create a playlist in our own account with an almost unique name (which we are sure there won't be a lot of matches for). We then search for it and it does not appear in the results although we are using its name as keyword. The playlists are publicly available.
Is there reasons for some playlists not to be searchable ? Country restrictions ? It does not seem to be related to its number of subscribers.