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