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