Perhaps you should try some spelling variations:
"logica matematica computer programmers." » "logica matematica computer programming.", "logica matematica computers programming.", "logica matematica computer program.", "logica mathematics computer programmers.", "fisica matematica computer programmers.", "la matematica computer programmers."
"ciencias matematicas computer programs." » "benditas matematicas computer programs.", "comicas matematicas computer programs.", "competencias matematicas computer programs.", "ciencias mathematics computer programs.", "ciencias matematicas como programs.", "ciencias matematicas comics programs.", "ciencias matematicas computer programas.", "ciencias matematicas computer programa."

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