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 does 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 drops practical astronomy sergey" » "the patrick drops optical astronomy sergey", "the patrick drops positional astronomy sergey", "the patrick drops practical astronomy surveys", "the patrick drops practical astronomy seven", "the patrick drops practical astronomy large", "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 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 moore national astronomy survey"

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 moore nautical astronomy survey")).
• 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 moore nautical astronomy survey\"))".
• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy sergey ) OR ( the patrick drops practical astronomy sergey ))) or ( the patrick moore nautical astronomy survey )).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick moocs practical astronomy sergey") OR ("the patrick drops practical astronomy sergey"))) or ("the patrick moore nautical astronomy survey"))*.