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