Perhaps you should try some spelling variations:
"the patrick moocs optical astronomy sergey" » "the patrick moocs spherical astronomy sergey", "the patrick moocs optical astronomy surveys", "the patrick moocs optical astronomy large", "the patrick moocs optical astronomy society", "the patrick moore optical astronomy sergey", "the patrick moyes optical astronomy sergey", "the patrick moore's optical astronomy sergey", "the patrick moon optical astronomy sergey", "the patrick topics optical astronomy sergey", "the patrick dots optical astronomy sergey"
"the patrick mons positional astronomy sergey" » "the patrick mons positional astronomy surveys", "the patrick mons positional astronomy large", "the patrick mons positional astronomy society", "the patrick monkey positional astronomy sergey", "the patrick points positional astronomy sergey", "the patrick holds positional astronomy sergey", "the patrick moyes positional astronomy sergey", "the patrick bond positional astronomy sergey", "the patrick mpondo positional astronomy sergey"
"the patrick moocs practical 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 moyes practical astronomy survey", "the patrick moore's practical astronomy survey"
"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 moyes nautical astronomy seven", "the patrick moore's nautical astronomy seven"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("the patrick moocs optical astronomy sergey") OR ("the patrick mons 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 optical astronomy sergey ) or ( the patrick mons 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 optical astronomy sergey") or ("the patrick mons positional astronomy sergey"))) or ("the patrick moocs practical astronomy survey"))) or ("the patrick moocs nautical astronomy seven"))*.