Perhaps you should try some spelling variations:
"the patrick moore practical astronomy sergey" » "the patrick moore nautical astronomy sergey", "the patrick moore optical astronomy sergey", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy seven", "the patrick moore practical astronomy large", "the patrick more practical astronomy sergey", "the patrick moocs practical astronomy sergey", "the patrick mouse practical astronomy sergey"
"the patrick moore practical astronomy surveys" » "the patrick moore nautical astronomy surveys", "the patrick moore optical astronomy surveys", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy survives", "the patrick moore practical autonomy survey", "the patrick more practical astronomy surveys", "the patrick moocs practical astronomy surveys", "the patrick mouse practical astronomy surveys"
"the patrick moore positional astronomy surveying" » "the patrick aware positional astronomy surveying", "the patrick pure positional astronomy surveying", "the patrick whole positional astronomy surveying"
"the patrick moore positional astronomy during" » "the patrick aware positional astronomy during", "the patrick pure positional astronomy during", "the patrick whole positional astronomy during", "the patrick moore positional astronomy dialling", "the patrick moore positional astronomy meeting", "the patrick moore positional economy during"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("the patrick moore practical astronomy sergey") OR ("the patrick moore practical astronomy surveys"))) OR ((("the patrick moore positional astronomy surveying") OR ("the patrick moore positional astronomy during")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick moore practical astronomy sergey\") OR (\"the patrick moore practical astronomy surveys\"))) or (((\"the patrick moore positional astronomy surveying\") or (\"the patrick moore positional astronomy during\"))))".
• Removing quotes may allow a broader search: (((( the patrick moore practical astronomy sergey ) OR ( the patrick moore practical astronomy surveys ))) or ((( the patrick moore positional astronomy surveying ) or ( the patrick moore positional astronomy during )))).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moore practical astronomy sergey") OR ("the patrick moore practical astronomy surveys"))) or ((("the patrick moore positional astronomy surveying") or ("the patrick moore positional astronomy during"))))*.