Perhaps you should try some spelling variations:
"business mathematical computer programs." » "business mathematics computer programs.", "business mathematical computer programas."
"business matematicas como programa." » "business mathematics como programa.", "basicas matematicas como programa.", "funciones matematicas como programa.", "business matematica como programa.", "business matematicas con programa.", "business matematica tomo programa.", "business matematicas como problema."

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: (("business mathematical computer programs.") or ("business matematicas como programa."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("business mathematical computer programs.") OR ("business matematicas como programa.")).
• Removing quotes may allow a broader search: (( business mathematical computer programs. ) or ( business matematicas como programa. )).
• Adding a wildcard symbol may retrieve word variants: (("business mathematical computer programs.") or ("business matematicas como programa."))*.