Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy survives » astronomy survey, astronomy studies
astronomy surveys » astronomy survey, astronomy surveying, astronomy sergey
moore practical » more practical, moocs practical, mouse practical
mkie practical » more practical, made practical, make practical
patrick mkie » patrick mackie, patrick mein, patrick m

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