Perhaps you should try some spelling variations:
"ciencias mathematics computer programming." » "ciencias mathematics computer programs.", "ciencias mathematics computer program.", "ciencias matematicas computer programming.", "sciences mathematics computer programming.", "financial mathematics computer programming."
"basicas matematicas con programa." » "comicas matematicas con programa.", "benditas matematicas con programa.", "fisica matematica con programa.", "basicas matematicas en programa.", "basicas matematica en programa.", "basicas matematicas y programa.", "basicas matematicas como programa.", "basicas matematicas un programa.", "basicas matematicas do programa."

Try widening your search to All Fields.

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