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