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