Perhaps you should try some spelling variations:
"basicas matematicas computer programmers." » "basicas matematicas computer programs.", "basicas matematicas computer programming.", "basicas matematicas computers programming.", "basicas mathematics computer programmers.", "basicas matematicas como programmers.", "basicas matematicas comics programmers.", "comicas matematicas computer programmers.", "benditas matematicas computer programmers.", "fisica matematica computer programmers."
"basicas matematicas con programa." » "comicas matematicas con programa.", "benditas matematicas con programa.", "fisica matematica 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 ("basicas matematicas computer programmers."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas matematicas con programa.") OR ("basicas matematicas computer programmers.")).
• Removing quotes may allow a broader search: (( basicas matematicas con programa. ) or ( basicas matematicas computer programmers. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas matematicas con programa.") or ("basicas matematicas computer programmers."))*.