Talvez debería tentar con algunhas variantes ortográficas:
information agents » information age, information access, information about
based decision » based design
agents based » agent based
aid schema » a schema, dtd schema, based schema
drm schema » orm schema, from schema, dam scheme

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

• Performing a fuzzy search may retrieve terms with similar spellings: information agents based decision ((aid schema) or (((drm schema) or (drm scheme))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information agents based decision ((aid schema) OR (((drm schema) OR (drm scheme)))).
• Adding a wildcard symbol may retrieve word variants: information agents based decision ((aid schema) or (((drm schema) or (drm scheme))))*.