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