Perhaps you should try some spelling variations:
"modified static estimation algorithms" » "modified static estimation algorithm", "modified static optimization algorithms", "modified static optimisation algorithm"
"modified notion optimisation algorithmssssssss" » "modified network optimization algorithmssssssss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified static estimation algorithms") or ("modified notion optimisation algorithmssssssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified static estimation algorithms") OR ("modified notion optimisation algorithmssssssss")).
• Removing quotes may allow a broader search: (( modified static estimation algorithms ) or ( modified notion optimisation algorithmssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("modified static estimation algorithms") or ("modified notion optimisation algorithmssssssss"))*.