Perhaps you should try some spelling variations:
length decision » lengthy decision, benth decision, health decision
decision free » decision tree, decision trees, decision frame
seven leagues » seven league, seventy leagues, seven plagues
world robot » word robot, world robert, world roots
world seven » world even, world server, world event
world root » world roots, world boot, world soot
ilec world » apec world, file world, inc world
2008 link » 2008 ink, 2008 linq, 2008 linz
2008 ilec » 2008 isecs, 2008 ieee, 2008 iet

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: (( 2008 link ((world root) OR (world robot)) length decision free ) OR ( 2008 ilec world seven leagues vision based )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 2008 link ((world root) OR (world robot)) length decision free ) or ( 2008 ilec world seven leagues vision based ))".
• Adding a wildcard symbol may retrieve word variants: (( 2008 link ((world root) OR (world robot)) length decision free ) or ( 2008 ilec world seven leagues vision based ))*.