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