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