Perhaps you should try some spelling variations:
"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.", "fisico matematicas computer programming."
"fisica matematica general programming." » "fisica matematica linear programming.", "fisica matematica control programming.", "fisica matematica lengua programming."

Try widening your search to All Fields.

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 computer programming.") or ("fisica matematica general programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas matematicas computer programming.") OR ("fisica matematica general programming.")).
• Removing quotes may allow a broader search: (( basicas matematicas computer programming. ) or ( fisica matematica general programming. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas matematicas computer programming.") or ("fisica matematica general programming."))*.