Perhaps you should try some spelling variations:
"science mathematics computer programming." » "science mathematics computer programs.", "science mathematics computer program.", "science mathematical computer programming."
"basicas matematicas control programming." » "comicas matematicas control programming.", "benditas matematicas control programming.", "fisica matematica control programming.", "basicas matematicas con programming.", "basicas matematicas como programming.", "basicas matematicas entre programming."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("science mathematics computer programming.") or ("basicas matematicas control programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("science mathematics computer programming.") OR ("basicas matematicas control programming.")).
• Removing quotes may allow a broader search: (( science mathematics computer programming. ) or ( basicas matematicas control programming. )).
• Adding a wildcard symbol may retrieve word variants: (("science mathematics computer programming.") or ("basicas matematicas control programming."))*.