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

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 ("historical materializar"))) or ("historico materialism"))) or ((("historicos materiales") or ("historica materialism"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("historical materialism") OR ("historical materializar"))) OR ("historico materialism"))) OR ((("historicos materiales") OR ("historica materialism"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"historical materialism\") OR (\"historical materializar\"))) or (\"historico materialism\"))) or (((\"historicos materiales\") or (\"historica materialism\"))))*".
• Removing quotes may allow a broader search: (((((( historical materialism ) OR ( historical materializar ))) or ( historico materialism ))) or ((( historicos materiales ) or ( historica materialism ))))*.