Perhaps you should try some spelling variations:
"modified invasive optimization algorithmss" » "modified invasive optimization algorithms", "modified invasive optimisation algorithm", "modified invasive estimation algorithms", "modified passive optimization algorithmss"
"modified objective predators algorithm" » "modified objective predation algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified invasive optimization algorithmss") OR ("modified objective predators algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified invasive optimization algorithmss\") OR (\"modified objective predators algorithm\"))".
• Removing quotes may allow a broader search: (( modified invasive optimization algorithmss ) OR ( modified objective predators algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified invasive optimization algorithmss") OR ("modified objective predators algorithm"))*.