Perhaps you should try some spelling variations:
primate visual » primary visual
visual three » visual tree, virtual three, visual theme
ii primate » iii primate, ii private, ii primare
7th world » 17th world, 4th world, 5th world
6th world » 4th world, 20th world, 18th world

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: "2006 ((7th world) OR (6th world)) ii primate visual three".
• Adding a wildcard symbol may retrieve word variants: 2006 ((7th world) OR (6th world)) ii primate visual three*.