Perhaps you should try some spelling variations:
optical astronomy » nautical astronomy, positional astronomy
astronomy series » gastronomy services, astronomy survives, astronomy studies
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
more spherical » smoke spherical, pole spherical, some spherical
moore optical » more optical, core optical, moon optical
patrick moire » patrick mkie, patrick meir, patrick moore's
moire optical » more optical, core optical, fibre optical
patrick more » patrick moyes, patrick mkie, patrick mark

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 optical astronomy series ) OR ((((( the patrick moore optical astronomy sergey ) OR ( the patrick moire optical astronomy sergey ))) OR ( the patrick more spherical astronomy sergey )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick moore optical astronomy series ) or ((((( the patrick moore optical astronomy sergey ) OR ( the patrick moire optical astronomy sergey ))) or ( the patrick more spherical astronomy sergey ))))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick moore optical astronomy series ) or ((((( the patrick moore optical astronomy sergey ) OR ( the patrick moire optical astronomy sergey ))) or ( the patrick more spherical astronomy sergey ))))*.