Perhaps you should try some spelling variations:
astronomy survey » astronomy surveys, astronomy sergey, astronomy surveying
moocs practical » mics practical, does practical, drops practical
autonomy survey » autonomy surgery, astronomy surveys, autonomy strive
taxonomy survey » taxonomic survey
moraes nautical » moraes practical
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 practical ((autonomy survey) OR (taxonomy survey)) ) OR ( the patrick moraes nautical astronomy survey )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick moocs practical ((autonomy survey) OR (taxonomy survey)) ) or ( the patrick moraes nautical astronomy survey ))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick moocs practical ((autonomy survey) OR (taxonomy survey)) ) or ( the patrick moraes nautical astronomy survey ))*.