Perhaps you should try some spelling variations:
astronomy surveys » astronomy surveying, astronomy survives, autonomy survey
moore positional » aware positional, pure positional, whole positional
astronomy sergey » astronomy seven, astronomy large, astronomy society
astronomy survey » autonomy survey, astronomy surveying, astronomy survives

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