Perhaps you should try some spelling variations:
"basicas mathematics computer programming." » "basicas mathematics computer programs.", "basicas mathematics computer program.", "basicas matematicas computer programming.", "business mathematics computer programming."
"exactas matematicas con programmers." » "exactas matematicas en programmers.", "exactas matematica en programmers.", "exactas matematicas y programmers.", "exactas matematicas con programmes.", "exactas matematicas con programme.", "exactas matematicas con programmed."

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

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