Perhaps you should try some spelling variations:
"modified objective estimation algorithms" » "modified objective estimation algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective allocation algorithms"
"mapping learning adam algorithm" » "machine learning adam algorithm", "enabling learning adam algorithm", "mapping learning mom algorithm", "mapping learning aided algorithm", "mapping learning a algorithm", "mapping learning from 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 adam algorithm") OR ("modified objective estimation algorithms"))~.
• Removing quotes may allow a broader search: (( mapping learning adam algorithm ) or ( modified objective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("mapping learning adam algorithm") or ("modified objective estimation algorithms"))*.