Perhaps you should try some spelling variations:
astronomy surveying » astronomy during
practical astronomy » optical astronomy, positional astronomy
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
patrick arens » patrick renz, patrick aher, patrick alan
patrick lens » patrick glenn, patrick lentz, patrick le
d nautical » _ nautical, a nautical, 2 nautical
patrick d » patrick _, patrick a

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 lens) OR (patrick arens)) practical astronomy survives ) OR ( the patrick d nautical astronomy surveying )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the ((patrick lens) OR (patrick arens)) practical astronomy survives ) or ( the patrick d nautical astronomy surveying ))".
• Adding a wildcard symbol may retrieve word variants: (( the ((patrick lens) OR (patrick arens)) practical astronomy survives ) or ( the patrick d nautical astronomy surveying ))*.