Perhaps you should try some spelling variations:
"basicas matematicas como programar." » "comicas matematicas como programar.", "benditas matematicas como programar.", "fisica matematica como programar.", "basicas matematica como programar.", "basicas matematicas con programar.", "basicas matematica tomo programar.", "basicas matematicas como programa.", "basicas matematicas campo programa.", "basicas matematicas con programa."
"basicas mathematics computer programas." » "business mathematics computer programas.", "basicas mathematics computer programs.", "basicas mathematics computer program.", "basicas mathematics computer programmers."

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