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 marine estimation algorithm" » "modified motion estimation algorithm", "modified risk estimation algorithm", "modified caging estimation algorithm", "modified male estimation algorithm", "modified passive estimation algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified marine estimation algorithm") or ("modified notion estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified marine estimation algorithm") OR ("modified notion estimation algorithms")).
• Removing quotes may allow a broader search: (( modified marine estimation algorithm ) or ( modified notion estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified marine estimation algorithm") or ("modified notion estimation algorithms"))*.