Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy surveys » astronomy surveying, astronomy survives, autonomy survey
astronomy survey » autonomy survey, astronomy surveying, astronomy survives
astronomy sergey » astronomy seven, astronomy large, astronomy society
mackie practical » machine practical, make practical, machines practical
moore practical » more practical, moocs practical, mouse practical
moore nautical » board nautical, mile nautical, moore national

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