Are you on the correct search tab in the Sonos App and are you then expanding the results list under the main Spotify heading. See ‘example’ screenshot attached.

Hello,

yes this is result 

Maybe first try reauthorising your Spotify music service in the Sonos App in ‘Settings/Services & Voice’ using your primary Spotify account credentials.

If that does not solve it, you could perhaps go onto try a Sonos App ‘reset’ in ‘Settings/App Preferences’ and on reopening the App and accepting the T&C’s, connect back to the ‘existing’ Sonos system and see if that then fixes it.

Hello,

I tried with your advice, but does’t work.
I tried also uninstall app,  but that didn't fix it.

Dunno then, the only time I’ve seen something similar to this before is where the Spotify service within Sonos is logged in with an account linked to the ‘free’ Spotify service, but if you have the family plan setup and are logged in with the primary Spotify account, then it should be working for searching for particular songs.

I would maybe go onto do a (failed) search and then submit a Sonos system diagnostic report from within the Sonos App and either note/post it’s reference back here and then contact/chat with Sonos Support Staff via this LINK  and see what the Staff can suggest to resolve the matter. 

This has been a problem for me since my first Sonos speaker.  I can search Spotify directly and via the Sonos app, and the Sonos app always shows me less of what I get using the Spotify app directly. This morning I searched for “Howard Skempton” in Spotify and got lots of results and starting playing some of his music. I casted it to my Sonos speaker. Later, I search for him in Sonos, I got no hits. However, I used the Sonos app to browse, and Howard Skempton was right there waiting for me. 

I only use the Spotify ‘free’ service but I was able to search and find Howard Skempton in the Sonos App search - did you have the ’Artists’ tab selected? See attached screenshot.

Thanks. That must have been it.