Perhaps you should try some spelling variations:
primaren visual » primary visual, primate visual, primate's visual
visual thermal » ideal thermal, seal thermal, visual terms
die primaren » die primare, der primaren, des primaren
ts worlds » its worlds, _ worlds, 3d worlds
2008 ts » 2008 5th, 2008 4th, 2008 9th

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: 2008 ts worlds die primaren visual thermal*.