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 surveys", "the patrick moocs practical astronomy seven", "the patrick mics practical astronomy sergey", "the patrick does practical astronomy sergey", "the patrick abcs practical astronomy sergey", "the patrick moore practical astronomy sergey", "the patrick mons practical astronomy sergey", "the patrick moyes practical astronomy sergey"
"the patrick drops practical astronomy sergey" » "the patrick drops optical astronomy sergey", "the patrick drops positional astronomy sergey", "the patrick drops practical astronomy survey", "the patrick drops practical astronomy surveys", "the patrick drops practical astronomy seven", "the patrick does practical astronomy sergey", "the patrick drugs practical astronomy sergey", "the patrick aris practical astronomy sergey", "the patrick debois practical astronomy sergey", "the patrick dr practical astronomy sergey", "the patrick brown practical astronomy sergey"
"the patrick logs nautical astronomy sergey" » "the patrick logs nautical astronomy survey", "the patrick logs nautical astronomy surveys", "the patrick logs nautical astronomy seven", "the patrick nos nautical astronomy sergey", "the patrick hoc nautical astronomy sergey", "the patrick some nautical astronomy sergey", "the patrick lord nautical astronomy sergey", "the patrick l.s nautical astronomy sergey", "the patrick love nautical astronomy sergey"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("the patrick moocs practical astronomy sergey") OR ("the patrick drops practical astronomy sergey"))) OR ("the patrick logs nautical astronomy sergey")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick moocs practical astronomy sergey\") OR (\"the patrick drops practical astronomy sergey\"))) or (\"the patrick logs nautical astronomy sergey\"))".
• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy sergey ) OR ( the patrick drops practical astronomy sergey ))) or ( the patrick logs nautical astronomy sergey )).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy sergey") OR ("the patrick drops practical astronomy sergey"))) or ("the patrick logs nautical astronomy sergey"))*.