Perhaps you should try some spelling variations:
"notion optimization algorithms" » "notion optimisation algorithm", "notion estimation algorithms", "notion estimation algorithm", "network optimization algorithms", "policy optimization algorithms", "allocation optimization algorithms"
"parameters estimation algorithmssssssssss" » "parameter estimation algorithmssssssssss", "parameter estimates algorithmssssssssss", "parameter optimization algorithmssssssssss"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"notion optimization algorithms\") OR (\"parameters estimation algorithmssssssssss\"))~".
• Removing quotes may allow a broader search: (( notion optimization algorithms ) OR ( parameters estimation algorithmssssssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("notion optimization algorithms") OR ("parameters estimation algorithmssssssssss"))*.