Perhaps you should try some spelling variations:
primate virtual » private virtual, primate visual, animated virtual
virtual thermo » virtual therapy, virtual teams, virtual team
does primate » does private, does climate, does primary
iso world » iosco world, two world, wto world
ilo world » halo world, two world, wto 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: "2008 ((iso world) OR (ilo world)) does primate virtual thermo".
• Adding a wildcard symbol may retrieve word variants: 2008 ((iso world) OR (ilo world)) does primate virtual thermo*.