Perhaps you should try some spelling variations:
"modified quadratic optimisation algorithmss" » "modified quadratic optimisation algorithm", "modified quadratic estimation algorithms", "modified quadratic estimation algorithm", "modified quadratic optimization algorithmss"
"modified parameter optimization algorithms" » "modified parameter optimisation algorithm", "modified parameter estimation algorithms", "modified parameter estimation algorithm", "modified parameters optimization algorithms"

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 quadratic optimisation algorithmss") or ("modified parameter optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified quadratic optimisation algorithmss") OR ("modified parameter optimization algorithms")).
• Removing quotes may allow a broader search: (( modified quadratic optimisation algorithmss ) or ( modified parameter optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified quadratic optimisation algorithmss") or ("modified parameter optimization algorithms"))*.