Perhaps you should try some spelling variations:
astronomy survives » astronomy survey, astronomy studies
astronomy surveys » astronomy survey, astronomy surveying, autonomy survey
astronomy sergey » astronomy survey, astronomy seven, astronomy large
mile nautical » i nautical, ii nautical, some nautical
practical » practice

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