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 algorithmssssssssss" » "allocation optimization algorithmsssssssssss", "allocation optimisation algorithmssssssssss", "allocation estimation algorithmssssssssss", "location optimization algorithmssssssssss"

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