Perhaps you should try some spelling variations:
"modified notion estimation algorithmsssss" » "modified notion estimation algorithms", "modified notion estimation algorithm", "modified motion estimation algorithmsssss"
"modified parameters optimization algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameters optimization algorithms", "modified parameters optimisation algorithm", "modified parameters estimation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified parameters optimization algorithm") or ("modified notion estimation algorithmsssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified parameters optimization algorithm") OR ("modified notion estimation algorithmsssss")).
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