Perhaps you should try some spelling variations:
"basicas mathematics computer programming." » "basicas mathematics computer programs.", "basicas mathematics computer program.", "basicas matematicas computer programming.", "business mathematics computer programming."
"basicas matematica tomo problema." » "basicas matematicas tomo problema.", "fisica matematica tomo problema.", "comicas matematicas tomo problema.", "basicas matematica como problema.", "basicas matematicas como problema.", "basicas matematica como problemas.", "basicas matematica togo problemas."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("basicas mathematics computer programming.") or ("basicas matematica tomo problema."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas mathematics computer programming.") OR ("basicas matematica tomo problema.")).
• Removing quotes may allow a broader search: (( basicas mathematics computer programming. ) or ( basicas matematica tomo problema. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas mathematics computer programming.") or ("basicas matematica tomo problema."))*.