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