Perhaps you should try some spelling variations:
astronomy survives » astronomy studies
astronomy surveys » astronomy surveying, autonomy survey, astronomical surveys
astronomy sergey » astronomy large, astronomy society, astronomy space
astronomy survey » autonomy survey, astronomy surveying, astronomy society
moore practical » more practical, moocs practical, mouse practical
astronomy seven » astronomy some, astronomy science, astronomy between

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