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