Perhaps you should try some spelling variations:
"modified invasive optimisation algorithms" » "modified invasive optimisation algorithm", "modified invasive optimization algorithms", "modified invasive estimation algorithms", "modified passive optimisation algorithms"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution 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 optimisation algorithms") OR ("modified objective allocation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified invasive optimisation algorithms\") OR (\"modified objective allocation algorithm\"))".
• Removing quotes may allow a broader search: (( modified invasive optimisation algorithms ) OR ( modified objective allocation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified invasive optimisation algorithms") OR ("modified objective allocation algorithm"))*.