Perhaps you should try some spelling variations:
vision theory » decision theory, action theory, dimension theory
vision theme » vision three, vision time, visit them
die imagery » line imagery, time imagery, use imagery
der imagery » sar imagery, der image, radar imagery
net world » next world, best world, text world
2008 net » 2008 next, 2008 new, 2008 1st

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 net world ((die imagery) OR (der imagery)) ((vision theme) OR (vision theory)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 net world ((die imagery) OR (der imagery)) ((vision theme) or (vision theory))".
• Adding a wildcard symbol may retrieve word variants: 2008 net world ((die imagery) OR (der imagery)) ((vision theme) or (vision theory))*.