Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy sergey" » "the patrick moocs optical astronomy sergey", "the patrick moocs positional astronomy sergey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical astronomy seven", "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 moore practical astronomy sergey" » "the patrick moore optical astronomy sergey", "the patrick moore positional astronomy sergey", "the patrick moore practical astronomy surveys", "the patrick moore practical astronomy seven", "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 moocs nautical astronomy sergey" » "the patrick moocs nautical astronomy surveys", "the patrick moocs nautical astronomy seven", "the patrick moocs nautical astronomy large", "the patrick hoc nautical astronomy sergey", "the patrick logs nautical astronomy sergey", "the patrick nos nautical astronomy sergey", "the patrick mons nautical astronomy sergey", "the patrick moyes nautical astronomy sergey", "the patrick moore's nautical astronomy sergey"
"the patrick moocs nautical astronomy survey" » "the patrick moocs nautical astronomy surveys", "the patrick moocs nautical autonomy survey", "the patrick moocs nautical astronomy surveying", "the patrick hoc nautical astronomy survey", "the patrick logs nautical astronomy survey", "the patrick nos nautical astronomy survey", "the patrick mons nautical astronomy survey", "the patrick moyes nautical astronomy survey", "the patrick moore's nautical astronomy survey"

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 moore practical astronomy sergey"))) OR ((("the patrick moocs nautical astronomy sergey") OR ("the patrick moocs nautical astronomy survey")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick moocs practical astronomy sergey\") or (\"the patrick moore practical astronomy sergey\"))) or (((\"the patrick moocs nautical astronomy sergey\") OR (\"the patrick moocs nautical astronomy survey\"))))".
• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy sergey ) or ( the patrick moore practical astronomy sergey ))) or ((( the patrick moocs nautical astronomy sergey ) OR ( the patrick moocs nautical astronomy survey )))).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy sergey") or ("the patrick moore practical astronomy sergey"))) or ((("the patrick moocs nautical astronomy sergey") OR ("the patrick moocs nautical astronomy survey"))))*.