Perhaps you should try some spelling variations:
optical astronomy » spherical astronomy
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
more positional » pure positional, more positioning, aware positional
moore optical » moire optical, more optical, core optical
patrick moyes » patrick keyes, patrick mayen, patrick moore's
patrick mons » patrick bond, patrick mpondo, patrick timony
patrick more » patrick mkie, patrick mark, patrick marx

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