Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
moore practical » moocs practical, mouse practical, course practical
board nautical » board practical, board national, board neutral
patrick board » patrick bond, patrick hubbard, patrick leonard
patrick more » patrick moyes, patrick mkie, patrick mark

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