Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
mkie practical » more practical, made practical, make practical
patrick mkie » patrick mackie, patrick mein, patrick moore

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

• Adding a wildcard symbol may retrieve word variants: the patrick mkie practical astronomy series*.