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

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 nutritivo\") OR (\"materials nutritivo\"))) OR (((\"materia nutritivo\") OR (\"materna nutritiva\"))))))~".
• Removing quotes may allow a broader search: (( maternal nutrition ) OR ((((( maternal nutritivo ) OR ( materials nutritivo ))) OR ((( materia nutritivo ) OR ( materna nutritiva ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("maternal nutrition") OR ((((("maternal nutritivo") OR ("materials nutritivo"))) OR ((("materia nutritivo") OR ("materna nutritiva"))))))*.