Perhaps you should try some spelling variations:
breast images » breast imaging, test images
vision theory » decision theory, dimension theory, diffusion theory
action theory » function theory
world breast » world best, world east, old breast
two world » two worlds
2008 two » 1808 two, 2008 tcp, 2008 ts

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 two world breast images ((vision theory) OR (action theory)).
• Adding a wildcard symbol may retrieve word variants: 2008 two world breast images ((vision theory) or (action theory))*.