Perhaps you should try some spelling variations:
"historicos materialism" » "historico materialism", "historicos materiales", "historicos materializar", "historicos materializan"
"historicas materialism" » "historicas materiales", "historicas materializar", "historicas materializan", "historias materialism", "historico materialism"
"historia materialism" » "historia materiales", "historia materializar", "historia materializan"
"historica materialism" » "historica materiales", "historica materializar", "historica materializan"
"historica materializa" » "historica materializar", "historica materializan", "historica materializado"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("historicos materialism") OR ((((("historicas materialism") OR ("historia materialism"))) OR ((("historica materialism") OR ("historica materializa"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"historicos materialism\") or (((((\"historicas materialism\") OR (\"historia materialism\"))) or (((\"historica materialism\") or (\"historica materializa\"))))))~".
• Removing quotes may allow a broader search: (( historicos materialism ) or ((((( historicas materialism ) OR ( historia materialism ))) or ((( historica materialism ) or ( historica materializa ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("historicos materialism") or ((((("historicas materialism") OR ("historia materialism"))) or ((("historica materialism") or ("historica materializa"))))))*.