Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy sergey" » "the patrick moocs optical astronomy sergey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical astronomy large", "the patrick moocs practical astronomy society", "the patrick mics practical astronomy sergey", "the patrick does practical astronomy sergey", "the patrick drops practical astronomy sergey", "the patrick moore practical astronomy sergey", "the patrick mons practical astronomy sergey", "the patrick moyes practical astronomy sergey"
"the patrick moocs practical astronomy survey" » "the patrick moocs optical astronomy survey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical autonomy survey", "the patrick moocs practical astronomy surveying", "the patrick mics practical astronomy survey", "the patrick does practical astronomy survey", "the patrick drops practical astronomy survey", "the patrick moore practical astronomy survey", "the patrick mons practical astronomy survey", "the patrick moyes practical astronomy survey"
"the patrick monkey positional astronomy sergey" » "the patrick hockey position astronomy sergey", "the patrick monkey positional astronomy surveys", "the patrick monkey positional astronomy large", "the patrick monkey positional astronomy society", "the patrick mcconney positional astronomy sergey", "the patrick moloney positional astronomy sergey", "the patrick moore positional astronomy sergey"
"the patrick logs nautical astronomy seven" » "the patrick logs nautical astronomy some", "the patrick logs nautical astronomy science", "the patrick logs nautical astronomy between", "the patrick nos nautical astronomy seven", "the patrick hoc nautical astronomy seven", "the patrick some nautical astronomy seven", "the patrick lord nautical astronomy seven", "the patrick l.s nautical astronomy seven", "the patrick love nautical astronomy seven"

Try widening your search to All Fields.

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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 monkey positional astronomy sergey"))) OR ("the patrick moocs practical astronomy survey"))) OR ("the patrick logs nautical astronomy seven")).
• Removing quotes may allow a broader search: (((((( the patrick moocs practical astronomy sergey ) or ( the patrick monkey positional astronomy sergey ))) or ( the patrick moocs practical astronomy survey ))) or ( the patrick logs nautical astronomy seven )).
• Adding a wildcard symbol may retrieve word variants: (((((("the patrick moocs practical astronomy sergey") or ("the patrick monkey positional astronomy sergey"))) or ("the patrick moocs practical astronomy survey"))) or ("the patrick logs nautical astronomy seven"))*.