Perhaps you should try some spelling variations:
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"the patrick moore practical astronomy study" » "the patrick moore nautical astronomy study", "the patrick moore positional astronomy study", "the patrick more practical astronomy study", "the patrick moocs practical astronomy study", "the patrick mouse practical astronomy study", "the patrick moore practical astronomy studies", "the patrick moore practical astronomy south", "the patrick moore practical astronomy star"
"the patrick mons optical astronomy survives" » "the patrick mons optical astronomy survey", "the patrick mons optical astronomy surveys", "the patrick mons optical astronomy studies", "the patrick mons nautical astronomy survives", "the patrick mons spherical astronomy survives", "the patrick mons positional astronomy survives", "the patrick moyes optical astronomy survives", "the patrick bond optical astronomy survives", "the patrick mpondo optical astronomy survives", "the patrick ions optical astronomy survives", "the patrick mono optical astronomy survives", "the patrick lens optical astronomy survives"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("the patrick mons practical astronomy survives") OR ("the patrick mons optical astronomy survives"))) OR ("the patrick moore practical astronomy study")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the patrick mons practical astronomy survives\") OR (\"the patrick mons optical astronomy survives\"))) or (\"the patrick moore practical astronomy study\"))".
• Removing quotes may allow a broader search: (((( the patrick mons practical astronomy survives ) OR ( the patrick mons optical astronomy survives ))) or ( the patrick moore practical astronomy study )).
• Adding a wildcard symbol may retrieve word variants: (((("the patrick mons practical astronomy survives") OR ("the patrick mons optical astronomy survives"))) or ("the patrick moore practical astronomy study"))*.