Perhaps you should try some spelling variations:
"_ estimation algorithmss" » "_ estimation algorithms", "_ estimation algorithm", "_ optimization algorithms"
"_ optimisation algorithm" » "_ optimization algorithms", "_ estimation algorithm", "_ estimation algorithms", "_ optimization algorithm"
"dose optimized algorithm" » "dose optimized algorithms", "dose optimizer algorithms", "done optimized algorithm", "jose optimized algorithm"

Try widening your search to All Fields.

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