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