Perhaps you should try some spelling variations:
"allocation optimisation algorithmssssss" » "allocation optimisation algorithm", "allocation optimization algorithms", "allocation optimization algorithmssssss"
"parameters estimation algorithms" » "parameter estimation algorithms", "parameter estimates algorithms", "parameter optimization algorithms", "parameters estimation algorithm", "parameters optimization algorithms", "parameters 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: (("parameters estimation algorithms") OR ("allocation optimisation algorithmssssss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parameters estimation algorithms\") OR (\"allocation optimisation algorithmssssss\"))".
• Removing quotes may allow a broader search: (( parameters estimation algorithms ) OR ( allocation optimisation algorithmssssss )).
• Adding a wildcard symbol may retrieve word variants: (("parameters estimation algorithms") OR ("allocation optimisation algorithmssssss"))*.