Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy surveys » astronomy survey, astronomy surveying, astronomy survives
astronomy sergey » astronomy survey, astronomy seven, astronomy large
meek practical » meets practical, risk practical, work practical
moore nautical » mile nautical, moore national, some nautical
board nautical » board practical, board national, board neutral
patrick meek » patrick meier, patrick mein, patrick mark
patrick some » patrick home, patrick sole, trick 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 meek practical astronomy sergey ) OR ((( the patrick some practical astronomy sergey ) OR ( the patrick ((moore nautical) OR (board nautical)) astronomy surveys )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the patrick meek practical astronomy sergey ) or ((( the patrick some practical astronomy sergey ) or ( the patrick ((moore nautical) OR (board nautical)) astronomy surveys ))))".
• Adding a wildcard symbol may retrieve word variants: (( the patrick meek practical astronomy sergey ) or ((( the patrick some practical astronomy sergey ) or ( the patrick ((moore nautical) OR (board nautical)) astronomy surveys ))))*.