Perhaps you should try some spelling variations:
"modified invasive optimisation algorithm" » "modified invasive optimization algorithms", "modified invasive estimation algorithm", "modified passive optimisation algorithm"
"modified network estimation algorithms" » "modified network estimation algorithm", "modified network optimization algorithms", "modified network approximation algorithms", "certified network estimation algorithms", "defined network estimation algorithms", "modified near estimation algorithms"

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