Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy survey » astronomy surveys, astronomy sergey, autonomy survey
moraes nautical » moraes practical
mons practical » coins practical, boss practical, lens practical
patrick moraes » patrick moyes, patrick moore's, patrick moore
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 survey ) OR ( the patrick moraes nautical astronomy survey )).
• Adding a wildcard symbol may retrieve word variants: (( the patrick mons practical astronomy survey ) or ( the patrick moraes nautical astronomy survey ))*.