Perhaps you should try some spelling variations:
"maternal nutrition" » "material nutrition", "materials nutrition", "internal nutrition", "maternal nutricion", "materiall nutrition"
"maternal nutritiva" » "material nutritiva", "materials nutritiva", "internal nutritiva", "materiall nutritiva"
"materna nutrition" » "materna nutricion", "material nutrition"
"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 ((("materna 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 (((\"materna nutritivo\") OR (\"materia nutritivo\"))))))*".
• Removing quotes may allow a broader search: (((( maternal nutrition ) OR ( maternal nutritiva ))) OR ((( materna nutrition ) OR ((( materna nutritivo ) OR ( materia nutritivo ))))))*.