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

You may be able to get more results by adjusting your search query.

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