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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("allocation estimation algorithms") OR ("parameters optimization algorithmssssssssssss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"allocation estimation algorithms\") OR (\"parameters optimization algorithmssssssssssss\"))".
• Removing quotes may allow a broader search: (( allocation estimation algorithms ) OR ( parameters optimization algorithmssssssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("allocation estimation algorithms") OR ("parameters optimization algorithmssssssssssss"))*.