Perhaps you should try some spelling variations:
border observatory » bird observatory, carter observatory, core observatory
european southern » europe southern, european software, european youth
coude observatory » core observatory, county observatory, ccd observatory
eso astrophysics » from astrophysics, nasa astrophysics, dust astrophysics

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: (( eso astrophysics symposia, european southern observatory ) OR ( eso astrophysics symposia, european ((coude observatory) OR (border observatory)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( eso astrophysics symposia, european southern observatory ) or ( eso astrophysics symposia, european ((coude observatory) OR (border observatory)) ))".
• Adding a wildcard symbol may retrieve word variants: (( eso astrophysics symposia, european southern observatory ) or ( eso astrophysics symposia, european ((coude observatory) OR (border observatory)) ))*.