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 survey", "the patrick moocs practical astronomy seven", "the patrick moocs practical astronomy large", "the patrick books practical astronomy sergey", "the patrick mics practical astronomy sergey", "the patrick colts practical astronomy sergey", "the patrick mons practical astronomy sergey", "the patrick moyes practical astronomy sergey", "the patrick moore's practical astronomy sergey"
"the patrick moocs practical astronomy surveys" » "the patrick moocs optical astronomy surveys", "the patrick moocs positional astronomy surveys", "the patrick moocs practical astronomy survey", "the patrick moocs practical astronomy surveying", "the patrick moocs practical astronomy survives", "the patrick books practical astronomy surveys", "the patrick mics practical astronomy surveys", "the patrick colts practical astronomy surveys", "the patrick mons practical astronomy surveys", "the patrick moyes practical astronomy surveys", "the patrick moore's practical astronomy surveys"
"the patrick moore national astronomy sergey" » "the patrick moore national autonomy sergey", "the patrick moore regional astronomy sergey", "the patrick moore national astronomical sergey", "the patrick moore national astronomy survey", "the patrick moore national astronomy seven", "the patrick moore national astronomy large", "the patrick moors national astronomy sergey", "the patrick more national astronomy sergey", "the patrick before national astronomy sergey"
"the patrick moore nautical astronomy sergey" » "the patrick moore nautical astronomy survey", "the patrick moore nautical astronomy seven", "the patrick moore nautical astronomy large", "the patrick board nautical astronomy sergey", "the patrick mile nautical astronomy sergey", "the patrick some nautical astronomy sergey"

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