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