Perhaps you should try some spelling variations:
optical astronomy » nautical astronomy, spherical astronomy
astronomy science » astronomy space, astronomy ancient
astronomy sergey » astronomy surveys, astronomy large, astronomy society
astronomy survey » astronomy surveys, autonomy survey, astronomy surveying
mkie positional » case positional, game positional, gene positional
astronomy seven » astronomy some, astronomy between, astronomy section
patrick more » patrick moore, patrick moyes, patrick mark
more optical » moire optical, core optical, more optimal
patrick mkie » patrick mackie, patrick mein, patrick moore
patrick case » patrick a, patrick c

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 more optical astronomy sergey ) OR ( the patrick more optical astronomy survey ))) OR ((( the patrick mkie positional astronomy seven ) OR ( the ((patrick case) OR (patrick fraser)) positional astronomy science )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( the patrick more optical astronomy sergey ) or ( the patrick more optical astronomy survey ))) or ((( the patrick mkie positional astronomy seven ) or ( the ((patrick case) OR (patrick fraser)) positional astronomy science ))))".
• Adding a wildcard symbol may retrieve word variants: (((( the patrick more optical astronomy sergey ) or ( the patrick more optical astronomy survey ))) or ((( the patrick mkie positional astronomy seven ) or ( the ((patrick case) OR (patrick fraser)) positional astronomy science ))))*.