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