Potser podríeu intentar variants ortogràfiques:
"children's first and children's classrooms" » "children's first and children's classroom", "children's first and children classrooms", "children's first and children's classics", "children's digest and children's classrooms", "children's art and children's classrooms", "children's films and children's classrooms"
"children's digital and children's plays" » "children's hospital and children's plays", "children's mental and children's plays", "children's dietary and children's plays", "children's digital and children's play"

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• Executant una cerca difusa por obtener resultaste amo pararles similares: (("children's digital and children's plays") or ("children's first and children's classrooms"))~.
• Si vols fer servir operadors booleans, han d'estar en majúscules: (("children's digital and children's plays") OR ("children's first and children's classrooms")).
• Eliminan les cometes pot apliar la cerca: (( children's digital and children's plays ) or ( children's first and children's classrooms )).
• Afegint truncament pot recuperar més registres: (("children's digital and children's plays") or ("children's first and children's classrooms"))*.