Perhaps you should try some spelling variations:
"de matematicas computer programmers." » "de matematicas como programmers.", "de matematicas comics programmers.", "de matematicas computer programming.", "de matematicas computers programming.", "de matematicas computer program."
"basicas mathematics computer programs." » "basicas matematicas computer programs.", "business mathematics computer programs.", "basicas mathematics computer programas.", "basicas mathematics computer programa."

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: (("de matematicas computer programmers.") OR ("basicas mathematics computer programs."))~.
• Removing quotes may allow a broader search: (( de matematicas computer programmers. ) or ( basicas mathematics computer programs. ))~.
• Adding a wildcard symbol may retrieve word variants: (("de matematicas computer programmers.") or ("basicas mathematics computer programs."))*.