Perhaps you should try some spelling variations:
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"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 autonomy surveying", "the patrick moocs practical astronomy survivesing", "the patrick moocs practical astronomy sevening", "the patrick books practical astronomy surveying", "the patrick mics practical astronomy surveying", "the patrick colts practical astronomy surveying", "the patrick mons practical astronomy surveying", "the patrick moyes practical astronomy surveying", "the patrick moore's practical astronomy surveying"
"the patrick mackie practical astronomy surveys" » "the patrick mackie optical astronomy surveys", "the patrick mackie positional astronomy surveys", "the patrick mackie practical astronomy survives", "the patrick mackie practical autonomy survey", "the patrick mackie practical astronomical surveys", "the patrick mackie practical autonomy surveys", "the patrick mackie practical astronomy survivess", "the patrick mackie practical astronomy sevens", "the patrick machine practical astronomy surveys", "the patrick make practical astronomy surveys", "the patrick machines practical astronomy surveys"
"the patrick moore nautical astronomy sergey" » "the patrick moore nautical astronomy seven", "the patrick moore nautical astronomy large", "the patrick moore nautical astronomy society", "the patrick board nautical astronomy sergey", "the patrick mile nautical astronomy sergey", "the patrick moore national astronomy sergey"

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