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