Perhaps you should try some spelling variations:
"ciencias mathematics logic programming." » "ciencias matematicas logic programming.", "sciences mathematics logic programming.", "financial mathematics logic programming.", "ciencias matematica logica programming."
"basicas matematicas computer programmers." » "basicas mathematics 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."

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