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