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

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