Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, positional astronomy
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
optical astronomy » nautical astronomy, spherical astronomy, positional astronomy
mouse practical » course practical, rouses practical, more practical
patrick mouse » patrick moore, patrick mons, patrick cousot
mouse optical » mouse cortical, mouse optic, use optical

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick mouse practical astronomy survives ) OR ( the patrick mouse optical astronomy survives ))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick mouse practical astronomy survives ) OR ( the patrick mouse optical astronomy survives ))*.