Perhaps you should try some spelling variations:
"modified pose optimisation algorithm" » "modified pose optimization algorithms", "modified pose estimation algorithm", "modified qoe optimization algorithm", "modified _ optimisation algorithm", "modified male optimisation algorithm", "modified passive optimisation algorithm"
"modified parameters estimation algorithms" » "modified parameter estimation algorithms", "modified parameter estimates algorithms", "modified parameter optimization algorithms", "modified parameters estimation algorithm", "modified parameters optimization algorithms", "modified parameters approximation algorithms"

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