Perhaps you should try some spelling variations:
"polynomial-rough approximation algorithm" » "polynomial-rough approximations algorithm", "polynomial-one approximation algorithm"
"polynomial-rough approximation algorithms" » "polynomial-rough approximations algorithms", "polynomial-one approximation algorithms"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("polynomial-rough approximation algorithm") OR ("polynomial-rough approximation algorithms"))~.
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