Perhaps you should try some spelling variations:
"ciencias mathematics computer programming." » "ciencias matematicas computer programming.", "sciences mathematics computer programming.", "financial mathematics computer programming.", "ciencias mathematics computer programs.", "ciencias mathematics computer program."
"basicas mathematics dynamic programming." » "basicas matematicas dynamic programming.", "business mathematics dynamic programming.", "basicas mathematics comic programming."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("ciencias mathematics computer programming.") OR ("basicas mathematics dynamic programming."))~.
• Removing quotes may allow a broader search: (( ciencias mathematics computer programming. ) or ( basicas mathematics dynamic programming. ))~.
• Adding a wildcard symbol may retrieve word variants: (("ciencias mathematics computer programming.") or ("basicas mathematics dynamic programming."))*.