Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy survey » astronomy surveys, astronomy sergey, autonomy survey
moore practical » more practical, moocs practical, mouse practical
astronomy seven » astronomy some, astronomy science, astronomy between
mkie positional » case positional, game positional, iv positional
gene positional » game positional, gene position, guenon positional
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 seven ))) OR ( the patrick ((mkie positional) OR (gene positional)) astronomy seven )).
• 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 seven ))) or ( the patrick ((mkie positional) OR (gene positional)) astronomy seven ))".
• Adding a wildcard symbol may retrieve word variants: (((( the patrick moore practical astronomy survey ) or ( the patrick moore nautical astronomy seven ))) or ( the patrick ((mkie positional) OR (gene positional)) astronomy seven ))*.