Perhaps you should try some spelling variations:
"fisica matematica computer program." » "fisica mathematics computer program.", "fisica matematica computer programs."
"basicas matematicas comics programming." » "comicas matematicas comics programming.", "benditas matematicas comics programming.", "fisico matematicas comics programming.", "basicas matematicas como programming.", "basicas mathematics comic programming.", "basicas matematicas economico programming.", "basicas matematicas logic programming.", "basicas matematicas units programming.", "basicas matematicas computers 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 program.") or ("basicas matematicas comics programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("fisica matematica computer program.") OR ("basicas matematicas comics programming.")).
• Removing quotes may allow a broader search: (( fisica matematica computer program. ) or ( basicas matematicas comics programming. )).
• Adding a wildcard symbol may retrieve word variants: (("fisica matematica computer program.") or ("basicas matematicas comics programming."))*.