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

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