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