Perhaps you should try some spelling variations:
"modified pulse optimisation algorithm" » "modified pulse optimization algorithms", "modified pulse estimation algorithm", "modified male optimisation algorithm", "modified passive optimisation algorithm"
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion approximation algorithms", "modified motion estimation algorithms"

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 pulse optimisation algorithm") OR ("modified notion estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified pulse optimisation algorithm ) or ( modified notion estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified pulse optimisation algorithm") or ("modified notion estimation algorithms"))*.