Perhaps you should try some spelling variations:
"historicas materiales" » "historia materiales" (Expand Search), "historico materiales" (Expand Search), "historias materiales" (Expand Search), "historicos materiales" (Expand Search)
"historicos materialism" » "historico materialism" (Expand Search)
"historica materialism" » "historia materialism" (Expand Search), "historico materialism" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"historicas materiales\") OR (((\"historicos materialism\") OR (\"historica materialism\"))))~".
• Removing quotes may allow a broader search: (( historicas materiales ) OR ((( historicos materialism ) OR ( historica materialism ))))~.
• Adding a wildcard symbol may retrieve word variants: (("historicas materiales") OR ((("historicos materialism") OR ("historica materialism"))))*.