Perhaps you should try some spelling variations:
"parameters optimization algorithmsssssssss" » "parameter optimization algorithmsssssssss", "parameter estimation algorithmsssssssss", "parameters optimization algorithmssssssssss", "parameters optimisation algorithmsssssssss", "parameters estimation algorithmsssssssss"
"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 algorithmsssssssss"))~.
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