Perhaps you should try some spelling variations:
"the patrick moore practical astronomy survives" » "the patrick moore optical astronomy survives", "the patrick moore practical astronomy surveys", "the patrick moore practical astronomy studies", "the patrick more practical astronomy survives", "the patrick moocs practical astronomy survives", "the patrick mouse practical astronomy survives"
"the patrick moore practical astronomy survey" » "the patrick moore optical astronomy survey", "the patrick moore practical astronomy surveys", "the patrick moore practical astronomy sergey", "the patrick moore practical autonomy survey", "the patrick more practical astronomy survey", "the patrick moocs practical astronomy survey", "the patrick mouse practical astronomy survey"
"the patrick moore nautical astronomy survives" » "the patrick moore nautical astronomy surveys", "the patrick moore nautical astronomy studies", "the patrick board nautical astronomy survives", "the patrick mile nautical astronomy survives", "the patrick moore national astronomy survives"
"the patrick moore positional astronomy survey" » "the patrick moore positional astronomy surveys", "the patrick moore positional astronomy sergey", "the patrick moore positional autonomy survey", "the patrick aware positional astronomy survey", "the patrick pure positional astronomy survey", "the patrick whole positional astronomy survey"

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