Perhaps you should try some spelling variations:
"and computational python computers programming" » "and computational python computer programming" (Expand search), "and computational python computer program" (Expand search), "and computational python computer programs" (Expand search), "and computacional python computers programming" (Expand search), "and computacional vpython computers programming" (Expand search), "and computacionais python computers programming" (Expand search), "_ computational python computers programming" (Expand search), "and computational to computers programming" (Expand search), "and computational on computers programming" (Expand search)
"an introduction in schools program" » "an introduction and schools program" (Expand search), "an introduction to schools program" (Expand search), "an introduction of schools program" (Expand search), "an introduction in school program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"an introduction in schools program\") OR (\"and computational python computers programming\"))~".
• Removing quotes may allow a broader search: (( an introduction in schools program ) OR ( and computational python computers programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("an introduction in schools program") OR ("and computational python computers programming"))*.