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

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