Perhaps you should try some spelling variations:
"_ optimizer algorithmss" » "_ optimizer algorithms", "_ optimized algorithm", "_ optimize algorithmss", "_ optimise algorithmss"
"robust estimation algorithms" » "robust estimation algorithm", "robust optimization algorithms", "robust optimisation algorithm", "pose estimation algorithms", "risk estimation algorithms"
"_ optimized algorithms" » "_ optimized algorithm", "_ optimizer algorithms", "_ optimization algorithms"

Try widening your search to All Fields.

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