Searching for:
Hell’s Kitchen US
The Wall
Masterchef (US)
My Kitchen Rules US
Masterchef Junior
Shameless US
Undercover Boss US
Mythbusters: The Search
All give results of the correct show or a couple of options including the correct show when I tried them just now. “The Wall” needed to be changed from “The Wall (Gameshow)”, and the US dropped from “Masterchef Junior”.
Or are you saying that after they’re added to Sonarr they don’t match releases? If so, see Scene Naming (TVDB Naming Conflicts).