Perhaps you should try some spelling variations:
science stories » science studies, science series, science theories
nano science » nato science, radio science, nanoscience _
2007 physics » 20 physics, 7 physics
20 physical » 2 physical, 10 physical, 2.1 physical
stories b » stories _, stories a, stories 2
2 physics » 2 physical

Try widening your search to All Fields.

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: %nano science stories b%3a%((((20 physical) OR (2007 physics))) OR (2 physics))%22.
• Adding a wildcard symbol may retrieve word variants: %nano science stories b%3a%((((20 physical) or (2007 physics))) or (2 physics))%22*.