Perhaps you should try some spelling variations:
"modified notion estimation algorithms" » "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified notion approximation algorithms", "modified motion estimation algorithms"
"modified total estimation algorithm" » "modified motion estimation algorithm", "modified pose estimation algorithm", "modified total variation algorithm", "modified thermal estimation algorithm", "modified ti6al4v estimation 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 total estimation algorithm") OR ("modified notion estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified total estimation algorithm ) or ( modified notion estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified total estimation algorithm") or ("modified notion estimation algorithms"))*.