Perhaps you should try some spelling variations:
"fisica matematica computer programmers." » "fisica matematica computer programs.", "fisica matematica computer programming.", "fisica matematica computers programming.", "fisica mathematics computer programmers.", "fisica matematica computer programsmers."
"fisico matematica computer program." » "fisico mathematics computer program.", "fisico matematicas computer program.", "logico matematica computer program.", "fisicomatematicas e computer program.", "fisico matematica computer programs."

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