Perhaps you should try some spelling variations:
crowd enabled » cloud enabled, grid enabled, rfid enabled
new enabled » now enabled, e enabled, been enabled
iet world » iot world, net world, ict world
2008 iet » 2008 ieee
case aid » case laid, case aij, case air
case ai » case aij, case air, case a

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: "2008 iet world ((new enabled) OR (crowd enabled)) ((case aid) OR (case ai))".
• Adding a wildcard symbol may retrieve word variants: 2008 iet world ((new enabled) OR (crowd enabled)) ((case aid) OR (case ai))*.