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

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