Perhaps you should try some spelling variations:
"modified parameters optimization algorithmssss" » "modified parameters optimization algorithms", "modified parameters optimisation algorithm", "modified parameter optimization algorithmssss", "modified parameter estimation algorithmssss"
"modified static estimation algorithms" » "modified static estimation algorithm", "modified static optimization algorithms", "modified static optimisation 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: (("modified static estimation algorithms") or ("modified parameters optimization algorithmssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified static estimation algorithms") OR ("modified parameters optimization algorithmssss")).
• Removing quotes may allow a broader search: (( modified static estimation algorithms ) or ( modified parameters optimization algorithmssss )).
• Adding a wildcard symbol may retrieve word variants: (("modified static estimation algorithms") or ("modified parameters optimization algorithmssss"))*.