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."
"ciencias matematicas con programming." » "benditas matematicas con programming.", "comicas matematicas con programming.", "competencias matematicas con programming.", "ciencias matematicas en programming.", "ciencias matematica en programming.", "ciencias matematicas y programming.", "ciencias matematicas web programming.", "ciencias matematicas control programming.", "ciencias matematicas logic programming."

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 ("ciencias matematicas con programming."))~.
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• Adding a wildcard symbol may retrieve word variants: (("basicas mathematics computer programming.") or ("ciencias matematicas con programming."))*.