Perhaps you should try some spelling variations:
"basicas matematicas logic programming." » "comicas matematicas logic programming.", "benditas matematicas logic programming.", "fisica matematica logic programming.", "basicas matematica logica programming.", "basicas mathematics logic programming.", "basicas matematicas comics programming."
"basicas matematicas units programming." » "comicas matematicas units programming.", "benditas matematicas units programming.", "fisica matematica units programming.", "basicas matematicas judith programming.", "basicas matematicas una programming.", "basicas matematicas un programming."

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

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