Perhaps you should try some spelling variations:
"historical materialism" » "historia materialism", "historico materialism", "historias materialism", "historical materializan", "historial materialism"
"historicos materialism" » "historicos materializan", "historico materialism"
"historicas materiales" » "historias materiales", "historia materiales", "historico materiales"
"historica materializar" » "historia materializar", "historica materializanr", "historica materializador", "historica materializadar"
"historicos materializa" » "historico materializa", "historicos materializan", "historicos materializado", "historicos materializada"

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 materiales") or ("historica materializar"))) or ((("historicos materialism") or ("historicos materializa"))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("historical materialism") OR ((((("historicas materiales") OR ("historica materializar"))) OR ((("historicos materialism") OR ("historicos materializa")))))).
• Removing quotes may allow a broader search: (( historical materialism ) or ((((( historicas materiales ) or ( historica materializar ))) or ((( historicos materialism ) or ( historicos materializa )))))).
• Adding a wildcard symbol may retrieve word variants: (("historical materialism") or ((((("historicas materiales") or ("historica materializar"))) or ((("historicos materialism") or ("historicos materializa"))))))*.