Perhaps you should try some spelling variations:
"the patrick moore practical astronomy sergey" » "the patrick moore nautical astronomy sergey", "the patrick moore positional astronomy sergey", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy large", "the patrick moore practical astronomy society", "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 positional astronomy surveys", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy surveying", "the patrick moore practical astronomy survives", "the patrick more practical astronomy surveys", "the patrick moocs practical astronomy surveys", "the patrick mouse practical astronomy surveys"
"the patrick moore optical astronomy seven" » "the patrick moore nautical astronomy seven", "the patrick moore spherical astronomy seven", "the patrick moore positional astronomy seven", "the patrick moore optical astronomy some", "the patrick moore optical astronomy science", "the patrick moore optical astronomy between", "the patrick moire optical astronomy seven", "the patrick more optical astronomy seven", "the patrick moon optical astronomy seven"
"the patrick core optical astronomy seven" » "the patrick core nautical astronomy seven", "the patrick core spherical astronomy seven", "the patrick core positional astronomy seven", "the patrick core optical astronomy some", "the patrick core optical astronomy science", "the patrick core optical astronomy between", "the patrick corr optical astronomy seven", "the patrick corsi optical astronomy seven", "the patrick coyle optical astronomy seven", "the patrick mode optical astronomy seven", "the patrick large optical astronomy seven"

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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 optical astronomy seven") OR ("the patrick core optical astronomy seven")))).
• 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 optical astronomy seven\") or (\"the patrick core optical astronomy seven\"))))".
• Removing quotes may allow a broader search: (((( the patrick moore practical astronomy sergey ) OR ( the patrick moore practical astronomy surveys ))) or ((( the patrick moore optical astronomy seven ) or ( the patrick core optical astronomy seven )))).
• 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 optical astronomy seven") or ("the patrick core optical astronomy seven"))))*.