Perhaps you should try some spelling variations:
"basicas mathematics computer programa." » "basicas matematicas computer programa.", "business mathematics computer programa.", "basicas mathematics computer programs.", "basicas mathematics computer program.", "basicas mathematics computer programming."
"comicas matematicas como programming." » "basicas matematicas como programming.", "ciencias matematicas como programming.", "logica matematica como programming.", "comicas matematica como programming.", "comicas matematicas con programming.", "comicas matematica tomo programming.", "comicas matematicas control programming.", "comicas matematicas logic programming.", "comicas matematicas computer programming."

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