Perhaps you should try some spelling variations:
matematicas y » matematica _, matematica i, matematica a
matematica y » matematica _, matematica i, matematica a
"matematica e cultura" » "matematica y cultura", "matematica la cultura"

Try widening your search to All Fields.

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: (("matematica e cultura") OR ("((matematica y) OR (matematicas y)) cultura")).
• Removing quotes may allow a broader search: (( matematica e cultura ) or ( ((matematica y) OR (matematicas y)) cultura )).
• Adding a wildcard symbol may retrieve word variants: (("matematica e cultura") or ("((matematica y) OR (matematicas y)) cultura"))*.