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