Perhaps you should try some spelling variations:
pela literatura » pena literatura, a literatura, de literatura
agent society » ageing society, agent societies
la literatura » la litterature, a literature
agent social » agents social, age social, against social
audio la » audio a, audio can, audio llm

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((agent society) OR (agent social)) audio la filosofia ((pela literatura) OR (la literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((agent society) or (agent social)) audio la filosofia ((pela literatura) OR (la literatura))".
• Adding a wildcard symbol may retrieve word variants: ((agent society) or (agent social)) audio la filosofia ((pela literatura) OR (la literatura))*.