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

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

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