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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"maternal nutrition\") OR (((\"maternal nutritiva\") OR (\"materia nutritiva\"))))) OR (((\"materna nutrition\") OR (\"materna nutritivo\"))))~".
• Removing quotes may allow a broader search: (((( maternal nutrition ) OR ((( maternal nutritiva ) OR ( materia nutritiva ))))) OR ((( materna nutrition ) OR ( materna nutritivo ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("maternal nutrition") OR ((("maternal nutritiva") OR ("materia nutritiva"))))) OR ((("materna nutrition") OR ("materna nutritivo"))))*.