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

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