Perhaps you should try some spelling variations:
"modified robust optimisation algorithm" » "modified robust optimization algorithms", "modified robust estimation algorithm", "modified robust estimation algorithms", "modified robust optimization algorithm"
"modified objective allocation algorithmss" » "modified objective location algorithmss", "modified objective allocation algorithms", "modified objective allocation algorithmic"

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 allocation algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified robust optimisation algorithm") OR ("modified objective allocation algorithmss")).
• Removing quotes may allow a broader search: (( modified robust optimisation algorithm ) or ( modified objective allocation algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified robust optimisation algorithm") or ("modified objective allocation algorithmss"))*.