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 books practical astronomy sergey", "the patrick mics practical astronomy sergey", "the patrick colts 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 books practical astronomy survey", "the patrick mics practical astronomy survey", "the patrick colts practical astronomy survey", "the patrick moore practical astronomy survey", "the patrick mons practical astronomy survey", "the patrick moyes practical astronomy survey"
"the patrick holds positional astronomy sergey" » "the patrick holds positional astronomy surveys", "the patrick holds positional astronomy large", "the patrick holds positional astronomy society", "the patrick acids positional astronomy sergey", "the patrick cells positional astronomy sergey", "the patrick half positional astronomy sergey", "the patriae holds positional astronomy sergey", "the patrick bolder positional astronomy sergey", "the patrick home positional astronomy sergey"
"the patrick moocs nautical astronomy seven" » "the patrick moocs nautical astronomy some", "the patrick moocs nautical astronomy science", "the patrick moocs nautical astronomy between", "the patrick hoc nautical astronomy seven", "the patrick logs nautical astronomy seven", "the patrick nos nautical astronomy seven", "the patrick moore nautical astronomy seven", "the patrick mons nautical astronomy seven", "the patrick moyes 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 holds positional astronomy sergey"))) OR ("the patrick moocs practical astronomy survey"))) OR ("the patrick moocs nautical astronomy seven")).
• Removing quotes may allow a broader search: (((((( the patrick moocs practical astronomy sergey ) or ( the patrick holds positional astronomy sergey ))) or ( the patrick moocs practical astronomy survey ))) or ( the patrick moocs nautical astronomy seven )).
• Adding a wildcard symbol may retrieve word variants: (((((("the patrick moocs practical astronomy sergey") or ("the patrick holds positional astronomy sergey"))) or ("the patrick moocs practical astronomy survey"))) or ("the patrick moocs nautical astronomy seven"))*.