Perhaps you should try some spelling variations:
"modified invasive optimization algorithms" » "modified invasive optimisation algorithm", "modified invasive estimation algorithms", "modified invasive estimation algorithm", "modified invasive optimisation algorithms", "modified invasive estimation algorithmss", "modified passive optimization algorithms"
"modified static optimization algorithm" » "modified static optimisation algorithm", "modified static estimation algorithm", "modified static estimation algorithms", "modified stage optimization algorithm", "modified stochastic optimization algorithm", "modified staffing optimization algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified static optimization algorithm") OR ("modified invasive optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified static optimization algorithm ) or ( modified invasive optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified static optimization algorithm") or ("modified invasive optimization algorithms"))*.