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."
"la matematica computer programas." » "la matematica computer programs.", "la matematica computer program.", "la matematica computer programmers.", "las matematicas computer programas.", "de matematicas computer programas."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("basicas mathematics computer programming.") or ("la matematica computer programas."))~.
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• Adding a wildcard symbol may retrieve word variants: (("basicas mathematics computer programming.") or ("la matematica computer programas."))*.