Perhaps you should try some spelling variations:
"parameters optimization algorithmsssssss" » "parameters optimization algorithms", "parameter optimization algorithmsssssss", "parameter estimation algorithmsssssss", "parameters optimization algorithmssssssss", "parameters optimisation algorithmsssssss", "parameters estimation algorithmsssssss"
"allocation optimization algorithm" » "allocation optimization algorithms", "allocation optimisation algorithm", "allocation estimation algorithm", "location optimization algorithm"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("allocation optimization algorithm") or ("parameters optimization algorithmsssssss"))~.
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