Perhaps you should try some spelling variations:
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
astronomy series » gastronomy services, astronomy studies, astronomy surveys
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
moore practical » more practical, moocs practical, mouse practical
autonomy survey » astronomy survey, autonomy surgery, astronomy surveys

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 series) OR (((astronomy survives) OR (autonomy survey))))) OR (astronomy sergey)).
• Adding a wildcard symbol may retrieve word variants: the patrick moore practical ((((astronomy series) or (((astronomy survives) or (autonomy survey))))) or (astronomy sergey))*.