Perhaps you should try some spelling variations:
"fisica matematica computer programming." » "fisica matematica computer programs.", "fisica matematica computer program.", "fisica mathematics computer programming."
"basicas matematicas con programa." » "comicas matematicas con programa.", "benditas matematicas con programa.", "fisico matematicas con programa.", "basicas matematicas en programa.", "basicas matematica en programa.", "basicas matematicas y programa.", "basicas matematicas como programa.", "basicas matematicas un programa.", "basicas matematicas do programa."

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