Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
mons practical » coins practical, does practical, lens practical
patrick moyes » patrick keyes, patrick mayen, patrick moylan
some nautical » some analytical, some practical, some critical
patrick mons » patrick bond, patrick mpondo, patrick timony
nos nautical » logs nautical, hoc nautical, task nautical
patrick some » patrick home, patrick sole, trick some
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 moyes) OR (patrick moore's)) practical astronomy sergey ) OR ( the patrick mons practical astronomy sergey ))) OR ((( the patrick nos nautical astronomy sergey ) OR ( the patrick some nautical astronomy sergey )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( the ((patrick moyes) OR (patrick moore's)) practical astronomy sergey ) or ( the patrick mons practical astronomy sergey ))) or ((( the patrick nos nautical astronomy sergey ) or ( the patrick some nautical astronomy sergey ))))".
• Adding a wildcard symbol may retrieve word variants: (((( the ((patrick moyes) OR (patrick moore's)) practical astronomy sergey ) or ( the patrick mons practical astronomy sergey ))) or ((( the patrick nos nautical astronomy sergey ) or ( the patrick some nautical astronomy sergey ))))*.