Perhaps you should try some spelling variations:
"funciones matematicas computer programs." » "funciones mathematics computer programs.", "funciones matematicas como programs.", "funciones matematicas comics programs.", "funcion matematicas computer programs.", "funciones matematicas computer programas.", "funciones matematicas computer programa."
"basicas matematicas computer program." » "basicas mathematics computer program.", "basicas matematicas como program.", "basicas matematicas comics program.", "comicas matematicas computer program.", "benditas matematicas computer program.", "fisica matematica computer program."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("funciones matematicas computer programs.") or ("basicas matematicas computer program."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("funciones matematicas computer programs.") OR ("basicas matematicas computer program."))*.
• Removing quotes may allow a broader search: (( funciones matematicas computer programs. ) or ( basicas matematicas computer program. ))*.