Perhaps you should try some spelling variations:
session three » session types
iosco world » unesco world
age session » stage session, late session, care session
iso world » ilo world, two world, wto world
das age » das agb, das agg, das agile

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: "2008 ((iso world) OR (iosco world)) das age session three".
• Adding a wildcard symbol may retrieve word variants: 2008 ((iso world) OR (iosco world)) das age session three*.