Perhaps you should try some spelling variations:
"sciences mathematics logic programming." » "science mathematics logic programming.", "sequences mathematics logic programming.", "science mathematical logic programming.", "sciences matematica logica programming."
"basicas matematicas computer programming." » "basicas mathematics computer programming.", "basicas matematicas como programming.", "basicas matematicas comics programming.", "basicas matematicas computer programs.", "basicas matematicas computer program.", "comicas matematicas computer programming.", "benditas matematicas computer programming.", "fisica matematica computer programming."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("sciences mathematics logic programming.") or ("basicas matematicas computer programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sciences mathematics logic programming.") OR ("basicas matematicas computer programming.")).
• Removing quotes may allow a broader search: (( sciences mathematics logic programming. ) or ( basicas matematicas computer programming. )).
• Adding a wildcard symbol may retrieve word variants: (("sciences mathematics logic programming.") or ("basicas matematicas computer programming."))*.