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 surveys", "the patrick moore practical astronomy large", "the patrick more practical astronomy sergey", "the patrick mouse practical astronomy sergey", "the patrick course practical astronomy sergey", "the patrick _oore practical astronomy sergey", "the patrick aoore practical astronomy sergey"
"the patrick moocs practical astronomy sergey" » "the patrick moocs nautical astronomy sergey", "the patrick moocs optical astronomy sergey", "the patrick moocs practical astronomy survey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical astronomy large", "the patrick mics practical astronomy sergey", "the patrick does practical astronomy sergey", "the patrick drops practical astronomy sergey", "the patrick mons practical astronomy sergey", "the patrick moyes practical astronomy sergey", "the patrick moore's practical astronomy sergey", "the patrick _oocs practical astronomy sergey", "the patrick aoocs practical astronomy sergey"
"the patrick m positional astronomy seven" » "the patrick m positional astronomy some", "the patrick m positional astronomy science", "the patrick m positional astronomy between", "the patrick _ positional astronomy seven", "the patrick 8 positional astronomy seven", "the patrick a positional 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 moocs practical astronomy sergey"))) OR ("the patrick m positional astronomy seven")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick moore practical astronomy sergey\") OR (\"the patrick moocs practical astronomy sergey\"))) or (\"the patrick m positional astronomy seven\"))".
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• Adding a wildcard symbol may retrieve word variants: (((("the patrick moore practical astronomy sergey") OR ("the patrick moocs practical astronomy sergey"))) or ("the patrick m positional astronomy seven"))*.