Perhaps you should try some spelling variations:
national astronomy » national autonomy, national astronomical, positional astronomy
regional astronomy » regional autonomy, regional economy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
board nautical » board practical, board national, board neutral
patrick board » patrick bond, patrick hubbard, patrick leonard

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