Perhaps you should try some spelling variations:
virtual three » virtual threads, virtual thermo, virtual time
edges image » edge image, ages image, edges imaging
edge images » range images
virtual try » virtual team
iso world » ilo world, iosco world, two world
2008 iso » 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 iso world ((edges image) OR (edge images)) ((virtual three) OR (virtual try)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 iso world ((edges image) or (edge images)) ((virtual three) OR (virtual try))".
• Adding a wildcard symbol may retrieve word variants: 2008 iso world ((edges image) or (edge images)) ((virtual three) OR (virtual try))*.