Perhaps you should try some spelling variations:
"the patrick moore practical astronomy survives" » "the patrick moore optical astronomy survives", "the patrick moore positional astronomy survives", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy studies", "the patrick more practical astronomy survives", "the patrick moocs practical astronomy survives", "the patrick mouse practical astronomy survives"
"the patrick moore practical astronomy surveys" » "the patrick moore optical astronomy surveys", "the patrick moore positional astronomy surveys", "the patrick moore practical astronomy survey", "the patrick moore practical astronomy surveying", "the patrick moore practical astronomy sergey", "the patrick more practical astronomy surveys", "the patrick moocs practical astronomy surveys", "the patrick mouse practical astronomy surveys"
"the patrick moore nautical astronomy survives" » "the patrick moore nautical astronomy survey", "the patrick moore nautical astronomy studies", "the patrick board nautical astronomy survives", "the patrick mile nautical astronomy survives", "the patrick some nautical astronomy survives"
"the patrick moore national astronomy survives" » "the patrick moore national astronomy survey", "the patrick moore national astronomy studies", "the patrick moore national autonomy survives", "the patrick moore regional astronomy survives", "the patrick moore national astronomical survives", "the patrick moors national astronomy survives", "the patrick more national astronomy survives", "the patrick before national astronomy survives"

Try widening your search to All Fields.

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