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