Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
der filosofia » de filosofia, e filosofia, di filosofia
code studies » core studies, case studies, wide studies
filosofia et » filosofia e, filosofia en, filosofia del
code studie » mode studie, code rstudio, mode studies

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "text ((code studie) OR (code studies)) der filosofia et litterature".
• Adding a wildcard symbol may retrieve word variants: text ((code studie) OR (code studies)) der filosofia et litterature*.