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