Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy survey" » "the patrick moocs optical astronomy survey", "the patrick moocs positional astronomy survey", "the patrick moocs practical astronomy sergey", "the patrick moocs practical autonomy survey", "the patrick moocs practical astronomy survives", "the patrick mics practical astronomy survey", "the patrick abcs practical astronomy survey", "the patrick ics practical astronomy survey", "the patrick moore practical astronomy survey", "the patrick mons practical astronomy survey", "the patrick moyes practical astronomy survey"
"the patrick moocs practical astronomy surveying" » "the patrick moocs optical astronomy surveying", "the patrick moocs positional astronomy surveying", "the patrick moocs practical astronomy during", "the patrick moocs practical astronomy sergeying", "the patrick moocs practical autonomy surveying", "the patrick moocs practical astronomy survivesing", "the patrick mics practical astronomy surveying", "the patrick abcs practical astronomy surveying", "the patrick ics practical astronomy surveying", "the patrick moore practical astronomy surveying", "the patrick mons practical astronomy surveying", "the patrick moyes practical astronomy surveying"
"the patrick moraes nautical astronomy surveys" » "the patrick moraes nautical astronomy survives", "the patrick moraes nautical astronomy sergey", "the patrick moraes nautical autonomy survey", "the patrick moraes nautical astronomy sergeys", "the patrick moraes nautical autonomy surveys", "the patrick moraes nautical astronomy survivess", "the patrick moraes practical astronomy surveys", "the patrick moyes nautical astronomy surveys", "the patrick moore's nautical astronomy surveys", "the patrick moore nautical astronomy surveys"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("the patrick moocs practical astronomy survey") OR ("the patrick moocs practical astronomy surveying"))) OR ("the patrick moraes nautical astronomy surveys")).
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• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy survey ) OR ( the patrick moocs practical astronomy surveying ))) or ( the patrick moraes nautical astronomy surveys )).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy survey") OR ("the patrick moocs practical astronomy surveying"))) or ("the patrick moraes nautical astronomy surveys"))*.