Perhaps you should try some spelling variations:
astronomy surveys » astronomy survey, astronomy surveying, astronomy survives
practice autonomy » practice autonomous, practica astronomy, practical astronomy
autonomy survey » astronomy survey, autonomy surgery, taxonomy survey
moraes nautical » moraes practical
moocs practice » moocs practical, books practice, cs practice
patrick moraes » patrick moyes, patrick moore's, patrick moore
patrick moocs » patrick moore, patrick mons, patrick moyes

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 practice autonomy survey ) OR ( the patrick moraes nautical astronomy surveys )).
• Adding a wildcard symbol may retrieve word variants: (( the patrick moocs practice autonomy survey ) or ( the patrick moraes nautical astronomy surveys ))*.