Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy surveying » astronomy during
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
moocs practical » mics practical, abcs practical, ics practical
moyes spherical » models spherical, eyes spherical, moments spherical
patrick moocs » patrick moore, patrick mons, patrick moore's
patrick moyes » patrick keyes, patrick mayen, patrick mons

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 survives ) OR ( the patrick moyes spherical astronomy surveying )).
• Adding a wildcard symbol may retrieve word variants: (( the patrick moocs practical astronomy survives ) or ( the patrick moyes spherical astronomy surveying ))*.