Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
nautical autonomy » national autonomy, natural autonomy, radical autonomy
astronomy sergey » astronomy survey, astronomy surveys, astronomy large
moocs practical » mics practical, clocks practical, colts practical
autonomy survey » astronomy survey, autonomy surgery, astronomy surveys
astronomy seven » astronomy some, astronomy science, astronomy between
patrick moocs » patrick moore, patrick mons, patrick moyes
nos nautical » logs nautical, hoc nautical, some nautical
patrick nos » patrick nomo, patrick bas, patrick n

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 nos nautical autonomy survey ) OR ( the patrick nos nautical astronomy seven )))).
• Adding a wildcard symbol may retrieve word variants: (( the patrick moocs practical astronomy sergey ) or ((( the patrick nos nautical autonomy survey ) or ( the patrick nos nautical astronomy seven ))))*.