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

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