Perhaps you should try some spelling variations:
"_ estimation algorithmss" » "_ estimation algorithm", "_ optimization algorithms", "_ estimation algorithms", "_ optimization algorithmss", "_ optimisation algorithms"
"pose estimation algorithms" » "pose estimation algorithm", "pose optimization algorithms", "pose optimisation algorithm", "poses estimation algorithms", "post estimation algorithms", "jose estimation algorithms"
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"

Try widening your search to All Fields.

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