Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
more practical » some practical
bate patrick » late patrick, state patrick, care patrick
patrick more » patrick moore, patrick moyes, patrick mkie

Try widening your search to All Fields.

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• Adding a wildcard symbol may retrieve word variants: %bate patrick more practical astronomy series%22*.