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

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("allocation optimization algorithmsssssssss") or ("parameters optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("allocation optimization algorithmsssssssss") OR ("parameters optimization algorithm")).
• Removing quotes may allow a broader search: (( allocation optimization algorithmsssssssss ) or ( parameters optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("allocation optimization algorithmsssssssss") or ("parameters optimization algorithm"))*.