Perhaps you should try some spelling variations:
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified motion estimation algorithms"
"mapping learning method algorithm" » "machine learning method algorithm", "enabling learning method algorithm", "mapping learning mom algorithm", "mapping learning methods algorithm", "mapping graining methods algorithm", "mapping learning emotion 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: (("mapping learning method algorithm") OR ("modified notion estimation algorithms"))~.
• Removing quotes may allow a broader search: (( mapping learning method algorithm ) or ( modified notion estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("mapping learning method algorithm") or ("modified notion estimation algorithms"))*.