Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy sergey" » "the patrick moocs optical astronomy sergey", "the patrick moocs practical astronomy surveys", "the patrick moocs practical astronomy large", "the patrick moocs practical astronomy society", "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 seven" » "the patrick moocs optical astronomy seven", "the patrick books practical astronomy seven", "the patrick mics practical astronomy seven", "the patrick colts practical astronomy seven", "the patrick moocs practical astronomy some", "the patrick moocs practical astronomy science", "the patrick moocs practical astronomy between", "the patrick mons practical astronomy seven", "the patrick moyes practical astronomy seven", "the patrick moore's practical astronomy seven"
"the patrick moocs positional astronomy sergey" » "the patrick moocs positional astronomy surveys", "the patrick moocs positional astronomy large", "the patrick moocs positional astronomy society", "the patrick holds positional astronomy sergey", "the patrick blocks positionals astronomy sergey", "the patrick images positional astronomy sergey", "the patrick mons positional astronomy sergey", "the patrick moyes positional astronomy sergey", "the patrick moore's positional 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 moocs positional astronomy sergey"))) OR ("the patrick moocs practical astronomy seven"))) 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 moocs positional astronomy sergey\"))) or (\"the patrick moocs practical astronomy seven\"))) or (\"the patrick moore nautical astronomy survey\"))".
• Removing quotes may allow a broader search: (((((( the patrick moocs practical astronomy sergey ) OR ( the patrick moocs positional astronomy sergey ))) or ( the patrick moocs practical astronomy seven ))) or ( the patrick moore nautical astronomy survey )).
• Adding a wildcard symbol may retrieve word variants: (((((("the patrick moocs practical astronomy sergey") OR ("the patrick moocs positional astronomy sergey"))) or ("the patrick moocs practical astronomy seven"))) or ("the patrick moore nautical astronomy survey"))*.