Perhaps you should try some spelling variations:
"fisicomatematicas _ computer programmers." » "fisicomatematicas _ computer programming.", "fisicomatematicas _ computers programming.", "fisicomatematicas _ computer program.", "biomatematicas _ computer programmers."
"fisica matematica computer programs." » "fisica mathematics computer programs.", "fisica matematica computer programas.", "fisica matematica computer programa."

You may be able to get more results by adjusting your search query.

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