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