Perhaps you should try some spelling variations:
"maternal nutrition" » "materials nutrition", "internal nutrition", "external nutrition", "maternal nutritiva"
"material nutrition" » "material nutritiva"
"materia nutritivo" » "materia 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 ("materna nutricion"))) OR ("material nutrition"))) OR ((("materia nutritivo") OR ("material nutritivo"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"maternal nutrition\") OR (\"materna nutricion\"))) OR (\"material nutrition\"))) OR (((\"materia nutritivo\") OR (\"material nutritivo\"))))".
• Removing quotes may allow a broader search: (((((( maternal nutrition ) OR ( materna nutricion ))) OR ( material nutrition ))) OR ((( materia nutritivo ) OR ( material nutritivo )))).
• Adding a wildcard symbol may retrieve word variants: (((((("maternal nutrition") OR ("materna nutricion"))) OR ("material nutrition"))) OR ((("materia nutritivo") OR ("material nutritivo"))))*.