Perhaps you should try some spelling variations:
"sequences mathematics computer programa." » "science mathematics computer programa.", "sequences mathematics computer programs.", "sequences mathematics computer program.", "sequences mathematics computer programming."
"basicas matematicas computer programmers." » "basicas matematicas como programmers.", "basicas matematicas comics programmers.", "basicas matematicas computer programs.", "basicas matematicas computer programming.", "basicas matematicas computers programming.", "comicas matematicas computer programmers.", "benditas matematicas computer programmers.", "fisica matematica computer programmers."

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 programmers.") or ("sequences mathematics computer programa."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas matematicas computer programmers.") OR ("sequences mathematics computer programa.")).
• Removing quotes may allow a broader search: (( basicas matematicas computer programmers. ) or ( sequences mathematics computer programa. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas matematicas computer programmers.") or ("sequences mathematics computer programa."))*.