Perhaps you should try some spelling variations:
"fisica mathematics computer program." » "fisica matematica computer program.", "fisico matematica computer program.", "fisico matematicas computer program.", "fisica mathematics computer programs."
"logico matematica computer programa." » "logica matematica computer programa.", "logico matematico computer programa.", "fisico matematica computer programa.", "logico matematica computer programs.", "logico matematica computer programming.", "logico matematica computer programmers.", "logico matematica computer programsa."

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