Perhaps you should try some spelling variations:
"exactas matematicas computer program." » "exactas mathematics computer program.", "exactas matematicas como program.", "exactas matematicas comics program.", "exactas matematicas computer programs."
"basicas matematicas computer programming." » "basicas mathematics computer programming.", "basicas matematicas como programming.", "basicas matematicas comics programming.", "basicas matematicas computer programs.", "comicas matematicas computer programming.", "benditas matematicas computer programming.", "fisica matematica computer programming.", "basicas matematicas computer programsming."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("exactas matematicas computer program.") or ("basicas matematicas computer programming."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("exactas matematicas computer program.") OR ("basicas matematicas computer programming.")).
• Removing quotes may allow a broader search: (( exactas matematicas computer program. ) or ( basicas matematicas computer programming. )).
• Adding a wildcard symbol may retrieve word variants: (("exactas matematicas computer program.") or ("basicas matematicas computer programming."))*.