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."
"funciones matematicas a programar." » "funciones matematicas y programar.", "funciones matematicas 1 programar.", "funciones matematicas 2 programar.", "funciones matematicas al programa.", "funciones matematicas de programas."

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