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 drops practical astronomy sergey", "the patrick abcs practical astronomy sergey", "the patrick mons practical astronomy sergey", "the patrick moyes practical astronomy sergey", "the patrick moore's practical astronomy sergey"
"the patrick does practical astronomy sergey" » "the patrick does optical astronomy sergey", "the patrick does positional astronomy sergey", "the patrick does practical astronomy surveys", "the patrick does practical astronomy seven", "the patrick does practical astronomy large", "the patrick notes practical astronomy sergey", "the patrick does practice astronomy sergey", "the patrick globes practical astronomy sergey", "the patrick dobel practical astronomy sergey", "the patrick de practical astronomy sergey", "the patrick del practical astronomy sergey"
"the patrick moore national astronomy survey" » "the patrick moore national autonomy survey", "the patrick moore regional astronomy survey", "the patrick moore national astronomical survey", "the patrick moore national astronomy surveys", "the patrick moore national astronomy surveying", "the patrick moors national astronomy survey", "the patrick more national astronomy survey", "the patrick before national astronomy survey"
"the patrick moore nautical astronomy survey" » "the patrick moore nautical astronomy surveys", "the patrick moore nautical autonomy survey", "the patrick moore nautical astronomy surveying", "the patrick board nautical astronomy survey", "the patrick mile nautical astronomy survey", "the patrick some 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 does practical astronomy sergey"))) OR ((("the patrick moore nautical astronomy survey") OR ("the patrick moore national astronomy survey")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick moocs practical astronomy sergey\") OR (\"the patrick does practical astronomy sergey\"))) or (((\"the patrick moore nautical astronomy survey\") or (\"the patrick moore national astronomy survey\"))))".
• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy sergey ) OR ( the patrick does practical astronomy sergey ))) or ((( the patrick moore nautical astronomy survey ) or ( the patrick moore national astronomy survey )))).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy sergey") OR ("the patrick does practical astronomy sergey"))) or ((("the patrick moore nautical astronomy survey") or ("the patrick moore national astronomy survey"))))*.