Perhaps you should try some spelling variations:
"fisica matematica computer programmers." » "fisica matematica computer programs.", "fisica matematica computer programming.", "fisica matematica computers programming."
"basicas mathematics computer programa." » "basicas matematicas computer programa.", "business mathematics computer programa.", "basicas mathematics computer programs.", "basicas mathematics computer program.", "basicas mathematics 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: (("fisica matematica computer programmers.") or ("basicas mathematics computer programa."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("fisica matematica computer programmers.") OR ("basicas mathematics computer programa.")).
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• Adding a wildcard symbol may retrieve word variants: (("fisica matematica computer programmers.") or ("basicas mathematics computer programa."))*.