Perhaps you should try some spelling variations:
practical astronomy » optical astronomy, positional astronomy
astronomy surveys » astronomy survey, astronomy surveying, astronomy survives
astronomy sergey » astronomy survey, astronomy seven, astronomy large
work practical » work practice, work practices, risk practical
moore nautical » board nautical, mile nautical, moore national
patrick work » patrick burk, patrick corr, patrick wohrle
patrick some » patrick home, patrick sole, patrick souper
trick some » tricks some, track some, kick some

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 work practical astronomy sergey ) OR ((( the ((patrick some) OR (trick some)) nautical astronomy sergey ) OR ( the patrick moore nautical astronomy surveys )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick work practical astronomy sergey ) or ((( the ((patrick some) OR (trick some)) nautical astronomy sergey ) or ( the patrick moore nautical astronomy surveys ))))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick work practical astronomy sergey ) or ((( the ((patrick some) OR (trick some)) nautical astronomy sergey ) or ( the patrick moore nautical astronomy surveys ))))*.