Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
positions astronomy » positional astronomy, applications astronomy
astronomy survives » astronomy surveys, astronomy studies
astronomy survey » astronomy surveys, astronomy sergey, autonomy survey
moyes practical » modes practical, movies practical, moraes practical
model positions » model position, modern positions, module positions
patrick moyes » patrick keyes, patrick mayen, patrick mons
patrick model » patrick del, patrick bolder, patrick michel

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 moyes practical astronomy survives ) OR ( the patrick model positions astronomy survey )).
• Adding a wildcard symbol may retrieve word variants: (( the patrick moyes practical astronomy survives ) or ( the patrick model positions astronomy survey ))*.