Perhaps you should try some spelling variations:
moore positional » aware positional, pure positional, whole positional
astronomy series » gastronomy services, astronomy survives, astronomy studies
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
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 positional astronomy series ) OR ((( the patrick moore nautical astronomy series ) OR ( the patrick moore nautical astronomy sergey )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick moore positional astronomy series ) or ((( the patrick moore nautical astronomy series ) OR ( the patrick moore nautical astronomy sergey ))))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick moore positional astronomy series ) or ((( the patrick moore nautical astronomy series ) OR ( the patrick moore nautical astronomy sergey ))))*.