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."
"ciencias mathematics dynamic programming." » "ciencias matematicas dynamic programming.", "sciences mathematics dynamic programming.", "financial mathematics dynamic programming.", "ciencias 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: (("basicas mathematics computer programming.") OR ("ciencias mathematics dynamic programming."))~.
• Removing quotes may allow a broader search: (( basicas mathematics computer programming. ) or ( ciencias mathematics dynamic programming. ))~.
• Adding a wildcard symbol may retrieve word variants: (("basicas mathematics computer programming.") or ("ciencias mathematics dynamic programming."))*.