Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
mouse practical » course practical, rouses practical, more practical
22the patrick » father patrick, late patrick, bate patrick
patrick mouse » patrick moore, patrick mons, patrick cousot

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