Perhaps you should try some spelling variations:
seven leagues » seven league, seventy leagues, seven plagues
roots health » root health, rooms health, bolts health
world roots » old roots, world robot, world robotics
link world » blinky world, blind world, link words
apec world » apex world, spec world, paper world
2008 link » 2008 ink, 2008 linq, 2008 linz
ape world » apex world, age world, apple world
tree » true

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 roots health decision tree ) OR ( 2008 ((apec world) OR (ape world)) seven leagues vision based )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 2008 link world roots health decision tree ) or ( 2008 ((apec world) OR (ape world)) seven leagues vision based ))".
• Adding a wildcard symbol may retrieve word variants: (( 2008 link world roots health decision tree ) or ( 2008 ((apec world) OR (ape world)) seven leagues vision based ))*.