Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
moore practical » more practical, mouse practical, course practical
moocs practical » mics practical, does practical, drops practical
patrick moocs » patrick mons, patrick moyes, patrick moore's

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 moore practical astronomy survives ) OR ( the patrick moocs practical astronomy survives ))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick moore practical astronomy survives ) OR ( the patrick moocs practical astronomy survives ))*.