Perhaps you should try some spelling variations:
"basicas matematicas computer program." » "basicas mathematics computer program.", "basicas matematicas como program.", "basicas matematicas comics program.", "benditas matematicas computer program.", "fisica matematica computer program.", "fisico matematicas computer program.", "basicas matematicas computer programs."
"comicas matematicas control programming." » "ciencias matematicas control programming.", "logica matematica control programming.", "economicos matematicos control programming.", "comicas matematicas con programming.", "comicas matematicas como programming.", "comicas matematicas entre programming."

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: (("basicas matematicas computer program.") or ("comicas matematicas control programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas matematicas computer program.") OR ("comicas matematicas control programming.")).
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• Adding a wildcard symbol may retrieve word variants: (("basicas matematicas computer program.") or ("comicas matematicas control programming."))*.