Perhaps you should try some spelling variations:
"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."
"ciencias matematicas computer programas." » "ciencias mathematics computer programas.", "ciencias matematicas como programas.", "ciencias matematicas comics programas.", "benditas matematicas computer programas.", "comicas matematicas computer programas.", "competencias matematicas computer programas.", "ciencias matematicas computer programs.", "ciencias matematicas computer program.", "ciencias matematicas computer 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 programmers.") or ("ciencias matematicas computer programas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basicas matematicas computer programmers.") OR ("ciencias matematicas computer programas.")).
• Removing quotes may allow a broader search: (( basicas matematicas computer programmers. ) or ( ciencias matematicas computer programas. )).
• Adding a wildcard symbol may retrieve word variants: (("basicas matematicas computer programmers.") or ("ciencias matematicas computer programas."))*.