Perhaps you should try some spelling variations:
"modified parameter optimization algorithms" » "modified parameter estimation algorithms", "modified parameter estimation algorithm", "modified parameter optimized algorithms", "modified parameters optimization algorithms"
"modified qoe optimisation algorithm" » "modified qoe estimation algorithm", "modified qoe estimation algorithms", "modified qoe optimization algorithm", "modified _ optimisation algorithm", "modified game optimization algorithm", "modified male optimisation algorithm", "modified bi1 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 parameter optimization algorithms") or ("modified qoe optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified parameter optimization algorithms") OR ("modified qoe optimisation algorithm")).
• Removing quotes may allow a broader search: (( modified parameter optimization algorithms ) or ( modified qoe optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified parameter optimization algorithms") or ("modified qoe optimisation algorithm"))*.