Perhaps you should try some spelling variations:
information agents » information age, information access, information about
based computation » based computational, based communication, based computing
agents based » agent based
basic links » basic linear
based labs » based lab, based lbs, based label
based land » based hand, based brand, based load

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 computation ((((based labs) or (basic links))) or (based land))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information agents based computation ((((based labs) OR (basic links))) OR (based land)).
• Adding a wildcard symbol may retrieve word variants: information agents based computation ((((based labs) or (basic links))) or (based land))*.