Perhaps you should try some spelling variations:
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
moore practical » more practical, moocs practical, course practical
mouse practical » course practical, rouses practical, more practical

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 ((moore practical) OR (mouse practical)) astronomy survives".
• Adding a wildcard symbol may retrieve word variants: the patrick ((moore practical) OR (mouse practical)) astronomy survives*.