Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
mons practical » coins practical, lens practical, loss practical
moore nautical » board nautical, moore national, some nautical
mile nautical » i nautical, ii nautical, some nautical
patrick mons » patrick moyes, patrick bond, patrick mpondo

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 mons practical astronomy series ) OR ( the patrick ((moore nautical) OR (mile nautical)) astronomy series )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick mons practical astronomy series ) or ( the patrick ((moore nautical) OR (mile nautical)) astronomy series ))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick mons practical astronomy series ) or ( the patrick ((moore nautical) OR (mile nautical)) astronomy series ))*.