Perhaps you should try some spelling variations:
"maternal nutrition" » "materna nutrition", "materials nutrition", "internal nutrition", "maternal nutricion", "maternal nutritiva"
"materia nutritivo" » "materia nutritiva"
"materiales nutritivo" » "materiales nutritiva"
"material nutritivo" » "material nutritiva"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("maternal nutrition") OR ((((("materia nutritivo") OR ("materiales nutritivo"))) OR ("material nutritivo"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"maternal nutrition\") OR (((((\"materia nutritivo\") OR (\"materiales nutritivo\"))) OR (\"material nutritivo\"))))".
• Removing quotes may allow a broader search: (( maternal nutrition ) OR ((((( materia nutritivo ) OR ( materiales nutritivo ))) OR ( material nutritivo )))).
• Adding a wildcard symbol may retrieve word variants: (("maternal nutrition") OR ((((("materia nutritivo") OR ("materiales nutritivo"))) OR ("material nutritivo"))))*.