Perhaps you should try some spelling variations:
"exactas matematicas computer programmers." » "exactas matematicas computer programs.", "exactas matematicas computer programming.", "exactas matematicas computers programming.", "exactas mathematics computer programmers.", "exactas matematicas comics programmers."
"basicas matematicas como programming." » "comicas matematicas como programming.", "benditas matematicas como programming.", "fisica matematica como programming.", "basicas matematica como programming.", "basicas matematicas con programming.", "basicas matematica tomo programming.", "basicas matematicas control programming.", "basicas matematicas logic programming.", "basicas matematicas computer programming."

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

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