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