Perhaps you should try some spelling variations:
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"the patrick moocs practical astronomy survey" » "the patrick moocs optical astronomy survey", "the patrick moocs positional astronomy survey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical autonomy survey", "the patrick moocs practical astronomy surveying", "the patrick books practical astronomy survey", "the patrick mics practical astronomy survey", "the patrick colts practical astronomy survey", "the patrick mons practical astronomy survey", "the patrick moyes practical astronomy survey", "the patrick moore's practical astronomy survey"
"the patrick moore nautical astronomy seven" » "the patrick moore nautical astronomy some", "the patrick moore nautical astronomy science", "the patrick moore nautical astronomy between", "the patrick board nautical astronomy seven", "the patrick mile nautical astronomy seven", "the patrick moore national astronomy seven"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("the patrick moocs practical astronomy sergey") OR ("the patrick moocs practical astronomy survey"))) OR ("the patrick moore nautical astronomy seven")).
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• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy sergey") OR ("the patrick moocs practical astronomy survey"))) or ("the patrick moore nautical astronomy seven"))*.