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