Perhaps you should try some spelling variations:
visual three » virtual three, visual theme, visualise three
visual tree » visual theme, visual trace, visual time
world dos » world does, world das, world des
2008 ict » 2008 iet, 2008 ice, 2008 iso

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 ict ((world dos) OR (world do)) image ((visual three) OR (visual tree)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 ict ((world dos) or (world do)) image ((visual three) OR (visual tree))".
• Adding a wildcard symbol may retrieve word variants: 2008 ict ((world dos) or (world do)) image ((visual three) OR (visual tree))*.