Perhaps you should try some spelling variations:
astronomy surveys » astronomy surveying, astronomy survives, astronomy sergey
astronomy survey » astronomy sergey, autonomy survey, astronomy surveying
moocs nautical » moocs practical, hoc nautical, logs nautical
patrick moocs » patrick moore, patrick mons, patrick moyes

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "the patrick moocs nautical ((astronomy surveys) OR (astronomy survey))*".