Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy sergey" » "the patrick moocs optical 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 positional astronomy surveys" » "the patrick moocs positional astronomy survey", "the patrick moocs positional astronomy surveying", "the patrick moocs positional astronomy survives", "the patrick holds positional astronomy surveys", "the patrick blocks positionals astronomy surveys", "the patrick images positional astronomy surveys", "the patrick mons positional astronomy surveys", "the patrick moyes positional astronomy surveys", "the patrick moore's positional astronomy surveys"
"the patrick moocs positional astronomy sergey" » "the patrick moocs positional astronomy survey", "the patrick moocs positional astronomy seven", "the patrick moocs positional astronomy large", "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 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 moore national 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 moocs positional astronomy sergey") OR ("the patrick moocs positional astronomy surveys"))))) OR ("the patrick moore 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 moocs positional astronomy sergey\") OR (\"the patrick moocs positional astronomy surveys\"))))) or (\"the patrick moore nautical astronomy sergey\"))".
• Removing quotes may allow a broader search: (((( the patrick moocs practical astronomy sergey ) or ((( the patrick moocs positional astronomy sergey ) OR ( the patrick moocs positional astronomy surveys ))))) or ( the patrick moore nautical astronomy sergey )).
• 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 positional astronomy surveys"))))) or ("the patrick moore nautical astronomy sergey"))*.