Perhaps you should try some spelling variations:
astronomy surveying » astronomy during
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
moocs nautical » moocs practical, hoc nautical, logs nautical
patrick moocs » patrick moore, patrick mons, patrick moyes
de spherical » _ spherical, a spherical, 2 spherical
patrick de » patrick d, patrick dr, patrick dale

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