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

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