Perhaps you should try some spelling variations:
"the patrick moocs practical astronomy sergey" » "the patrick moons practical astronomy sergey", "the patrick moocs practice astronomy sergey"
"the patrick moocs nautical astronomy sergey" » "the patrick moons 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 moocs nautical astronomy sergey") OR ("the patrick hoc nautical astronomy sergey")))).
• Removing quotes may allow a broader search: (( the patrick moocs practical astronomy sergey ) or ((( the patrick moocs nautical astronomy sergey ) or ( the patrick hoc nautical astronomy sergey )))).
• Adding a wildcard symbol may retrieve word variants: (("the patrick moocs practical astronomy sergey") or ((("the patrick moocs nautical astronomy sergey") or ("the patrick hoc nautical astronomy sergey"))))*.